Repository avatars (#6986)

* Repository avatars

- first variant of code from old work for gogs
- add migration 87
- add new option in app.ini
- add en-US locale string
- add new class in repository.less

* Add changed index.css, remove unused template name

* Update en-us doc about configuration options

* Add comments to new functions, add new option to docker app.ini

* Add comment for lint

* Remove variable, not needed

* Fix formatting

* Update swagger api template

* Check if avatar exists

* Fix avatar link/path checks

* Typo

* TEXT column can't have a default value

* Fixes:

- remove old avatar file on upload
- use ID in name of avatar file - users may upload same files
- add simple tests

* Fix fmt check

* Generate PNG instead of "static" GIF

* More informative comment

* Fix error message

* Update avatar upload checks:

- add file size check
- add new option
- update config docs
- add new string to en-us locale

* Fixes:

- use FileHEader field for check file size
- add new test - upload big image

* Fix formatting

* Update comments

* Update log message

* Removed wrong style - not needed

* Use Sync2 to migrate

* Update repos list view

- bigger avatar
- fix html blocks alignment

* A little adjust avatar size

* Use small icons for explore/repo list

* Use new cool avatar preparation func by @lafriks

* Missing changes for new function

* Remove unused import, move imports

* Missed new option definition in app.ini

Add file size check in user/profile avatar upload

* Use smaller field length for Avatar

* Use session to update repo DB data, update DeleteAvatar - use session too

* Fix err variable definition

* As suggested @lafriks - return as soon as possible, code readability

modules/setting/setting.go

@@ -250,14 +250,16 @@ var (
 	}
 
 	// Picture settings
-	AvatarUploadPath      string
-	AvatarMaxWidth        int
-	AvatarMaxHeight       int
-	GravatarSource        string
-	GravatarSourceURL     *url.URL
-	DisableGravatar       bool
-	EnableFederatedAvatar bool
-	LibravatarService     *libravatar.Libravatar
+	AvatarUploadPath           string
+	AvatarMaxWidth             int
+	AvatarMaxHeight            int
+	GravatarSource             string
+	GravatarSourceURL          *url.URL
+	DisableGravatar            bool
+	EnableFederatedAvatar      bool
+	LibravatarService          *libravatar.Libravatar
+	AvatarMaxFileSize          int64
+	RepositoryAvatarUploadPath string
 
 	// Log settings
 	LogLevel           string
@@ -835,8 +837,14 @@ func NewContext() {
 	if !filepath.IsAbs(AvatarUploadPath) {
 		AvatarUploadPath = path.Join(AppWorkPath, AvatarUploadPath)
 	}
+	RepositoryAvatarUploadPath = sec.Key("REPOSITORY_AVATAR_UPLOAD_PATH").MustString(path.Join(AppDataPath, "repo-avatars"))
+	forcePathSeparator(RepositoryAvatarUploadPath)
+	if !filepath.IsAbs(RepositoryAvatarUploadPath) {
+		RepositoryAvatarUploadPath = path.Join(AppWorkPath, RepositoryAvatarUploadPath)
+	}
 	AvatarMaxWidth = sec.Key("AVATAR_MAX_WIDTH").MustInt(4096)
 	AvatarMaxHeight = sec.Key("AVATAR_MAX_HEIGHT").MustInt(3072)
+	AvatarMaxFileSize = sec.Key("AVATAR_MAX_FILE_SIZE").MustInt64(1048576)
 	switch source := sec.Key("GRAVATAR_SOURCE").MustString("gravatar"); source {
 	case "duoshuo":
 		GravatarSource = "http://gravatar.duoshuo.com/avatar/"