Fix comments in config1 (#3946)

* Fix some comments in custom/conf/app.ini.sample

Some comments in app.ini.sample were very vague, didn't contain much information.
Some of them have been fixed, but mistakes that need to be fixed by an expert still remain, see #3928

Signed-off-by: Mikolaj Holysz <miki123211@gmail.com>

* Add an additional comment pointing to more documentation.

Add an additional comment to the top of the sample configuration file.
It contains a link pointing to gitea's docs and the configcheat sheet, which contains
some explanations about the parameters in the config.

Signed-off-by: Mikolaj Holysz <miki123211@gmail.com>

custom/conf/app.ini.sample

@@ -2,7 +2,9 @@
 ; Copy required sections to your own app.ini (default is custom/conf/app.ini)
 ; and modify as needed.
 
-; App name that shows on every page title
+; see https://docs.gitea.io/en-us/config-cheat-sheet/ for additional documentation.
+
+; App name that shows in every page title
 APP_NAME = Gitea: Git with a cup of tea
 ; Change it if you run locally
 RUN_USER = git
@@ -16,28 +18,28 @@ SCRIPT_TYPE = bash
 ANSI_CHARSET =
 ; Force every new repository to be private
 FORCE_PRIVATE = false
-; Default private when create a new repository, could be: last, private, public. Default is last which means last user repo visiblity.
+; Default privacy setting when creating a new repository, allowed values: last, private, public. Default is last which means the last setting used.
 DEFAULT_PRIVATE = last
-; Global maximum creation limit of repository per user, -1 means no limit
+; Global limit of repositories per user, applied at creation time. -1 means no limit
 MAX_CREATION_LIMIT = -1
 ; Mirror sync queue length, increase if mirror syncing starts hanging
 MIRROR_QUEUE_LENGTH = 1000
 ; Patch test queue length, increase if pull request patch testing starts hanging
 PULL_REQUEST_QUEUE_LENGTH = 1000
 ; Preferred Licenses to place at the top of the List
-; Name must match file name in conf/license or custom/conf/license
+; The name here must match the filename in conf/license or custom/conf/license
 PREFERRED_LICENSES = Apache License 2.0,MIT License
-; Disable ability to interact with repositories by HTTP protocol
+; Disable the ability to interact with repositories using the HTTP protocol
 DISABLE_HTTP_GIT = false
 ; Force ssh:// clone url instead of scp-style uri when default SSH port is used
 USE_COMPAT_SSH_URI = false
 
 [repository.editor]
-; List of file extensions that should have line wraps in the CodeMirror editor
+; List of file extensions for which lines should be wrapped in the CodeMirror editor
-; Separate extensions with a comma. To line wrap files w/o extension, just put a comma
+; Separate extensions with a comma. To line wrap files without an extension, just put a comma
 LINE_WRAP_EXTENSIONS = .txt,.md,.markdown,.mdown,.mkd,
 ; Valid file modes that have a preview API associated with them, such as api/v1/markdown
-; Separate values by commas. Preview tab in edit mode won't show if the file extension doesn't match
+; Separate the values by commas. The preview tab in edit mode won't be displayed if the file extension doesn't match
 PREVIEWABLE_FILE_MODES = markdown
 
 [repository.local]
@@ -53,39 +55,39 @@ ENABLED = true
 TEMP_PATH = data/tmp/uploads
 ; One or more allowed types, e.g. image/jpeg|image/png. Nothing means any file type
 ALLOWED_TYPES =
-; Max size of each file in MB. Defaults to 3MB
+; Max size of each file in megabytes. Defaults to 3MB
 FILE_MAX_SIZE = 3
 ; Max number of files per upload. Defaults to 5
 MAX_FILES = 5
 
 [ui]
-; Number of repositories that are showed in one explore page
+; Number of repositories that are displayed on one explore page
 EXPLORE_PAGING_NUM = 20
-; Number of issues that are showed in one page
+; Number of issues that are displayed on one page
 ISSUE_PAGING_NUM = 10
-; Number of maximum commits showed in one activity feed
+; Number of maximum commits displayed in one activity feed
 FEED_MAX_COMMIT_NUM = 5
 ; Value of `theme-color` meta tag, used by Android >= 5.0
 ; An invalid color like "none" or "disable" will have the default style
 ; More info: https://developers.google.com/web/updates/2014/11/Support-for-theme-color-in-Chrome-39-for-Android
 THEME_COLOR_META_TAG = `#6cc644`
-; Max size of files to be displayed (defaults is 8MiB)
+; Max size of files to be displayed (default is 8MiB)
 MAX_DISPLAY_FILE_SIZE = 8388608
-; Whether show the user email in the Explore Users page
+; Whether the email of the user should be shown in the Explore Users page
 SHOW_USER_EMAIL = true
 
 [ui.admin]
-; Number of users that are showed in one page
+; Number of users that are displayed on one page
 USER_PAGING_NUM = 50
-; Number of repos that are showed in one page
+; Number of repos that are displayed on one page
 REPO_PAGING_NUM = 50
-; Number of notices that are showed in one page
+; Number of notices that are displayed on in one page
 NOTICE_PAGING_NUM = 25
-; Number of organization that are showed in one page
+; Number of organizations that are displayed on one page
 ORG_PAGING_NUM = 50
 
 [ui.user]
-; Number of repos that are showed in one page
+; Number of repos that are displayed on one page
 REPO_PAGING_NUM = 15
 
 [ui.meta]
@@ -100,19 +102,19 @@ ENABLE_HARD_LINE_BREAK = false
 ; for example git,magnet
 CUSTOM_URL_SCHEMES =
 ; List of file extensions that should be rendered/edited as Markdown
-; Separate extensions with a comma. To render files w/o extension as markdown, just put a comma
+; Separate the extensions with a comma. To render files without any extension as markdown, just put a comma
 FILE_EXTENSIONS = .md,.markdown,.mdown,.mkd
 
 [server]
-; Listen protocol. One of 'http', 'https', 'unix' or 'fcgi'.
+; The protocol the server listens on. One of 'http', 'https', 'unix' or 'fcgi'.
 PROTOCOL = http
 DOMAIN = localhost
 ROOT_URL = %(PROTOCOL)s://%(DOMAIN)s:%(HTTP_PORT)s/
-; Listen address. Either a IPv4/IPv6 address or the path to a unix socket.
+; The address to listen on. Either a IPv4/IPv6 address or the path to a unix socket.
 HTTP_ADDR = 0.0.0.0
 HTTP_PORT = 3000
 ; If REDIRECT_OTHER_PORT is true, and PROTOCOL is set to https an http server
-; will be started on PORT_TO_REDIRECT and redirect request to the main
+; will be started on PORT_TO_REDIRECT and it will redirect plain, non-secure http requests to the main
 ; ROOT_URL.  Defaults are false for REDIRECT_OTHER_PORT and 80 for
 ; PORT_TO_REDIRECT.
 REDIRECT_OTHER_PORT = false
@@ -125,33 +127,33 @@ UNIX_SOCKET_PERMISSION = 666
 LOCAL_ROOT_URL = %(PROTOCOL)s://%(HTTP_ADDR)s:%(HTTP_PORT)s/
 ; Disable SSH feature when not available
 DISABLE_SSH = false
-; Whether use builtin SSH server or not.
+; Whether to use the builtin SSH server or not.
 START_SSH_SERVER = false
-; Username to use for builtin SSH server. If blank, then it is the value of RUN_USER.
+; Username to use for the builtin SSH server. If blank, then it is the value of RUN_USER.
 BUILTIN_SSH_SERVER_USER =
 ; Domain name to be exposed in clone URL
 SSH_DOMAIN = %(DOMAIN)s
-; Network interface builtin SSH server listens on
+; THe network interface the builtin SSH server should listen on
 SSH_LISTEN_HOST =
 ; Port number to be exposed in clone URL
 SSH_PORT = 22
-; Port number builtin SSH server listens on
+; The port number the builtin SSH server should listen on
 SSH_LISTEN_PORT = %(SSH_PORT)s
 ; Root path of SSH directory, default is '~/.ssh', but you have to use '/home/git/.ssh'.
 SSH_ROOT_PATH =
-; For built-in SSH server only, choose the ciphers to support for SSH connections,
+; For the built-in SSH server, choose the ciphers to support for SSH connections,
 ; for system SSH this setting has no effect
 SSH_SERVER_CIPHERS = aes128-ctr, aes192-ctr, aes256-ctr, aes128-gcm@openssh.com, arcfour256, arcfour128
-; For built-in SSH server only, choose the key exchange algorithms to support for SSH connections,
+; For the built-in SSH server, choose the key exchange algorithms to support for SSH connections,
 ; for system SSH this setting has no effect
 SSH_SERVER_KEY_EXCHANGES = diffie-hellman-group1-sha1, diffie-hellman-group14-sha1, ecdh-sha2-nistp256, ecdh-sha2-nistp384, ecdh-sha2-nistp521, curve25519-sha256@libssh.org
-; For built-in SSH server only, choose the MACs to support for SSH connections,
+; For the built-in SSH server, choose the MACs to support for SSH connections,
 ; for system SSH this setting has no effect
 SSH_SERVER_MACS = hmac-sha2-256-etm@openssh.com, hmac-sha2-256, hmac-sha1, hmac-sha1-96
-; Directory to create temporary files when test public key using ssh-keygen,
+; Directory to create temporary files in when testing public keys using ssh-keygen,
-; default is system temporary directory.
+; default is the system temporary directory.
 SSH_KEY_TEST_PATH =
-; Path to ssh-keygen, default is 'ssh-keygen' and let shell find out which one to call.
+; Path to ssh-keygen, default is 'ssh-keygen' which means the shell is responsible for finding out which one to call.
 SSH_KEYGEN_PATH = ssh-keygen
 ; Enable SSH Authorized Key Backup when rewriting all keys, default is true
 SSH_BACKUP_AUTHORIZED_KEYS = true
@@ -171,7 +173,7 @@ DISABLE_ROUTER_LOG = false
 ; $ openssl pkcs12 -in cert.pfx -out key.pem -nocerts -nodes
 CERT_FILE = custom/https/cert.pem
 KEY_FILE = custom/https/key.pem
-; Upper level of template and static file path
+; Root directory containing templates and static files.
 ; default is the path where Gitea is executed
 STATIC_ROOT_PATH =
 ; Default path for App data
@@ -182,9 +184,9 @@ ENABLE_GZIP = false
 LANDING_PAGE = home
 ; Enables git-lfs support. true or false, default is false.
 LFS_START_SERVER = false
-; Where your lfs files put on, default is data/lfs.
+; Where your lfs files reside, default is data/lfs.
 LFS_CONTENT_PATH = data/lfs
-; LFS authentication secret, changed this to yourself.
+; LFS authentication secret, change this yourself
 LFS_JWT_SECRET =
 
 ; Define allowed algorithms and their minimum key length (use -1 to disable a type)
@@ -204,7 +206,7 @@ USER = root
 PASSWD =
 ; For "postgres" only, either "disable", "require" or "verify-full"
 SSL_MODE = disable
-; For "sqlite3" and "tidb", use absolute path when you start as service
+; For "sqlite3" and "tidb", use absolute path when you start gitea as service
 PATH = data/gitea.db
 ; For "sqlite3" only. Query timeout
 SQLITE_TIMEOUT = 500
@@ -222,7 +224,7 @@ UPDATE_BUFFER_LEN = 20
 MAX_FILE_SIZE = 1048576
 
 [admin]
-; Disable regular (non-admin) users to create organizations
+; Disallow regular (non-admin) users from creating organizations.
 DISABLE_REGULAR_ORG_CREATION = false
 
 [security]
@@ -230,13 +232,13 @@ DISABLE_REGULAR_ORG_CREATION = false
 INSTALL_LOCK = false
 ; !!CHANGE THIS TO KEEP YOUR USER DATA SAFE!!
 SECRET_KEY = !#@FDEWREWR&*(
-; Auto-login remember days
+; How long to remember that an user is logged in before requiring relogin (in days)
 LOGIN_REMEMBER_DAYS = 7
 COOKIE_USERNAME = gitea_awesome
 COOKIE_REMEMBER_NAME = gitea_incredible
 ; Reverse proxy authentication header name of user name
 REVERSE_PROXY_AUTHENTICATION_USER = X-WEBAUTH-USER
-; Sets the minimum password length for new Users
+; The minimum password length for new Users
 MIN_PASSWORD_LENGTH = 6
 ; True when users are allowed to import local server paths
 IMPORT_LOCAL_PATHS = false
@@ -245,7 +247,7 @@ DISABLE_GIT_HOOKS = false
 
 [openid]
 ;
-; OpenID is an open standard and decentralized authentication protocol.
+; OpenID is an open, standard and decentralized authentication protocol.
 ; Your identity is the address of a webpage you provide, which describes
 ; how to prove you are in control of that page.
 ;
@@ -264,7 +266,7 @@ DISABLE_GIT_HOOKS = false
 ; Whether to allow signin in via OpenID
 ENABLE_OPENID_SIGNIN = true
 ; Whether to allow registering via OpenID
-; Do not include to rely on DISABLE_REGISTRATION setting
+; Do not include to rely on rhw DISABLE_REGISTRATION setting
 ;ENABLE_OPENID_SIGNUP = true
 ; Allowed URI patterns (POSIX regexp).
 ; Space separated.
@@ -280,11 +282,11 @@ BLACKLISTED_URIS =
 [service]
 ; Time limit to confirm account/email registration
 ACTIVE_CODE_LIVE_MINUTES = 180
-; Time limit to confirm forgot password reset process
+; Time limit to perform the reset of a forgotten password
 RESET_PASSWD_CODE_LIVE_MINUTES = 180
-; User need to confirm e-mail for registration
+; Whether a new user needs to confirm their email when registering.
 REGISTER_EMAIL_CONFIRM = false
-; Does not allow register and admin create account only
+; Disallow registration, only allow admins to create accounts.
 DISABLE_REGISTRATION = false
 ; User must sign in to view anything.
 REQUIRE_SIGNIN_VIEW = false
@@ -296,10 +298,10 @@ ENABLE_REVERSE_PROXY_AUTO_REGISTRATION = false
 ; Enable captcha validation for registration
 ENABLE_CAPTCHA = true
 ; Default value for KeepEmailPrivate
-; New user will get the value of this setting copied into their profile
+; Each new user will get the value of this setting copied into their profile
 DEFAULT_KEEP_EMAIL_PRIVATE = false
 ; Default value for AllowCreateOrganization
-; New user will have rights set to create organizations depending on this setting
+; Every new user will have rights set to create organizations depending on this setting
 DEFAULT_ALLOW_CREATE_ORGANIZATION = true
 ; Enable Timetracking
 ENABLE_TIMETRACKING = true
@@ -307,10 +309,10 @@ ENABLE_TIMETRACKING = true
 ; Repositories will use timetracking by default depending on this setting
 DEFAULT_ENABLE_TIMETRACKING = true
 ; Default value for AllowOnlyContributorsToTrackTime
-; Only users with write permissions could track time if this is true
+; Only users with write permissions can track time if this is true
 DEFAULT_ALLOW_ONLY_CONTRIBUTORS_TO_TRACK_TIME = true
 ; Default value for the domain part of the user's email address in the git log
-; if he has set KeepEmailPrivate true. The user's email replaced with a
+; if he has set KeepEmailPrivate to true. The user's email will be replaced with a
 ; concatenation of the user name in lower case, "@" and NO_REPLY_ADDRESS.
 NO_REPLY_ADDRESS = noreply.example.org
 
@@ -335,9 +337,9 @@ SUBJECT = %(APP_NAME)s
 ; QQ: smtp.qq.com:465
 ; Note, if the port ends with "465", SMTPS will be used. Using STARTTLS on port 587 is recommended per RFC 6409. If the server supports STARTTLS it will always be used.
 HOST =
-; Disable HELO operation when hostname are different.
+; Disable HELO operation when hostnames are different.
 DISABLE_HELO =
-; Custom hostname for HELO operation, default is from system.
+; Custom hostname for HELO operation, if no value is provided, one is retrieved from system.
 HELO_HOSTNAME =
 ; Do not verify the certificate of the server. Only use this for self-signed certificates
 SKIP_VERIFY =
@@ -377,7 +379,7 @@ ITEM_TTL = 16h
 ; Either "memory", "file", or "redis", default is "memory"
 PROVIDER = memory
 ; Provider config options
-; memory: not have any config yet
+; memory: doesn't have any config yet
 ; file: session file path, e.g. `data/sessions`
 ; redis: network=tcp,addr=:6379,password=macaron,db=0,pool_size=100,idle_timeout=180
 ; mysql: go-sql-driver/mysql dsn config string, e.g. `root:password@/session_table`
@@ -398,11 +400,11 @@ AVATAR_UPLOAD_PATH = data/avatars
 ; Chinese users can choose "duoshuo"
 ; or a custom avatar source, like: http://cn.gravatar.com/avatar/
 GRAVATAR_SOURCE = gravatar
-; This value will be forced to be true in offline mode.
+; This value will always be true in offline mode.
 DISABLE_GRAVATAR = false
 ; Federated avatar lookup uses DNS to discover avatar associated
 ; with emails, see https://www.libravatar.org
-; This value will be forced to be false in offline mode or Gravatar is disabled.
+; This value will always be false in offline mode or when Gravatar is disabled.
 ENABLE_FEDERATED_AVATAR = false
 
 [attachment]
@@ -412,9 +414,9 @@ ENABLE = true
 PATH = data/attachments
 ; One or more allowed types, e.g. image/jpeg|image/png
 ALLOWED_TYPES = image/jpeg|image/png|application/zip|application/gzip
-; Max size of each file. Defaults to 32MB
+; Max size of each file. Defaults to 4MB
 MAX_SIZE = 4
-; Max number of files per upload. Defaults to 10
+; Max number of files per upload. Defaults to 5
 MAX_FILES = 5
 
 [time]
@@ -428,7 +430,7 @@ ROOT_PATH =
 ; Either "console", "file", "conn", "smtp" or "database", default is "console"
 ; Use comma to separate multiple modes, e.g. "console, file"
 MODE = console
-; Buffer length of channel, keep it as it is if you don't know what it is.
+; Buffer length of the channel, keep it as it is if you don't know what it is.
 BUFFER_LEN = 10000
 ; Either "Trace", "Debug", "Info", "Warn", "Error", "Critical", default is "Trace"
 LEVEL = Trace
@@ -442,13 +444,13 @@ LEVEL =
 LEVEL =
 ; This enables automated log rotate(switch of following options), default is true
 LOG_ROTATE = true
-; Max line number of single file, default is 1000000
+; Max number of lines in a single file, default is 1000000
 MAX_LINES = 1000000
-; Max size shift of single file, default is 28 means 1 << 28, 256MB
+; Max size shift of a single file, default is 28 means 1 << 28, 256MB
 MAX_SIZE_SHIFT = 28
 ; Segment log daily, default is true
 DAILY_ROTATE = true
-; Expired days of log file(delete after max days), default is 7
+; delete the log file after n days, default is 7
 MAX_DAYS = 7
 
 ; For "conn" mode only
@@ -532,9 +534,9 @@ UPDATE_EXISTING = true
 [git]
 ; Disables highlight of added and removed changes
 DISABLE_DIFF_HIGHLIGHT = false
-; Max number of lines allowed of a single file in diff view
+; Max number of lines allowed in a single file in diff view
 MAX_GIT_DIFF_LINES = 1000
-; Max number of characters of a line allowed in diff view
+; Max number of allowed characters in a line in diff view
 MAX_GIT_DIFF_LINE_CHARACTERS = 5000
 ; Max number of files shown in diff view
 MAX_GIT_DIFF_FILES = 100
@@ -559,7 +561,7 @@ MIN_INTERVAL = 10m
 [api]
 ; Enables /api/swagger, /api/v1/swagger etc. endpoints. True or false; default is true.
 ENABLE_SWAGGER_ENDPOINT = true
-; Max number of items will response in a page
+; Max number of items in a page
 MAX_RESPONSE_ITEMS = 50
 
 [i18n]
@@ -598,7 +600,7 @@ ko-KR = ko
 SHOW_FOOTER_BRANDING = false
 ; Show version information about Gitea and Go in the footer
 SHOW_FOOTER_VERSION = true
-; Show time of template execution in the footer
+; Show template execution time in the footer
 SHOW_FOOTER_TEMPLATE_LOAD_TIME = true
 
 [markup.asciidoc]
@@ -607,5 +609,5 @@ ENABLED = false
 FILE_EXTENSIONS = .adoc,.asciidoc
 ; External command to render all matching extensions
 RENDER_COMMAND = "asciidoc --out-file=- -"
-; Input is not a standard input but a file
+; Don't pass the file on STDIN, pass the filename as argument instead.
 IS_INPUT_FILE = false