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

templates/explore/repo_list.tmpl

@@ -2,6 +2,7 @@
 	{{range .Repos}}
 		<div class="item">
 			<div class="ui header">
+				<img class="ui avatar image" src="{{.RelAvatarLink}}">
 				<a class="name" href="{{.Link}}">
 					{{if or $.PageIsExplore $.PageIsProfileStarList }}{{if .Owner}}{{.Owner.Name}} / {{end}}{{end}}{{.Name}}
 					{{if .IsArchived}}<i class="archive icon archived-icon"></i>{{end}}
@@ -14,7 +15,7 @@
 					<span><i class="octicon octicon-repo-clone"></i></span>
 				{{else if .Owner}}
 					{{if .Owner.Visibility.IsPrivate}}
-			          <span class="text gold"><i class="octicon octicon-lock"></i></span>
+					<span class="text gold"><i class="octicon octicon-lock"></i></span>
 					{{end}}
 				{{end}}
 				<div class="ui right metas">
@@ -22,15 +23,17 @@
 					<span class="text grey"><i class="octicon octicon-git-branch"></i> {{.NumForks}}</span>
 				</div>
 			</div>
-			{{if .DescriptionHTML}}<p class="has-emoji">{{.DescriptionHTML}}</p>{{end}}
-			{{if .Topics }}
-				<div class="ui tags">
-				{{range .Topics}}
-					{{if ne . "" }}<a href="{{AppSubUrl}}/explore/repos?q={{.}}&topic=1"><div class="ui small label topic">{{.}}</div></a>{{end}}
+			<div class="description">
+				{{if .DescriptionHTML}}<p class="has-emoji">{{.DescriptionHTML}}</p>{{end}}
+				{{if .Topics }}
+					<div class="ui tags">
+					{{range .Topics}}
+						{{if ne . "" }}<a href="{{AppSubUrl}}/explore/repos?q={{.}}&topic=1"><div class="ui small label topic">{{.}}</div></a>{{end}}
+					{{end}}
+					</div>
 				{{end}}
-				</div>
-			{{end}}
-			<p class="time">{{$.i18n.Tr "org.repo_updated"}} {{TimeSinceUnix .UpdatedUnix $.i18n.Lang}}</p>
+				<p class="time">{{$.i18n.Tr "org.repo_updated"}} {{TimeSinceUnix .UpdatedUnix $.i18n.Lang}}</p>
+			</div>
 		</div>
 	{{else}}
 	<div>

templates/repo/header.tmpl

@@ -3,7 +3,11 @@
 	<div class="ui container">
 		<div class="repo-header">
 			<div class="ui huge breadcrumb repo-title">
+				{{if .RelAvatarLink}}
+				<img class="ui avatar image" src="{{.RelAvatarLink}}">
+				{{else}}
 				<i class="mega-octicon octicon-{{if .IsPrivate}}lock{{else if .IsMirror}}repo-clone{{else if .IsFork}}repo-forked{{else}}repo{{end}}"></i>
+				{{end}}
 				<a href="{{AppSubUrl}}/{{.Owner.Name}}">{{.Owner.Name}}</a>
 				<div class="divider"> / </div>
 				<a href="{{$.RepoLink}}">{{.Name}}</a>

templates/repo/settings/options.tmpl

@@ -41,6 +41,22 @@
 					<button class="ui green button">{{$.i18n.Tr "repo.settings.update_settings"}}</button>
 				</div>
 			</form>
+
+			<div class="ui divider"></div>
+
+			<form class="ui form" action="{{.Link}}/avatar" method="post" enctype="multipart/form-data">
+				{{.CsrfTokenHtml}}
+				<div class="inline field">
+					<label for="avatar">{{.i18n.Tr "settings.choose_new_avatar"}}</label>
+					<input name="avatar" type="file" >
+				</div>
+
+				<div class="field">
+					<button class="ui green button">{{$.i18n.Tr "settings.update_avatar"}}</button>
+					<a class="ui red button delete-post" data-request-url="{{.Link}}/avatar/delete" data-done-url="{{.Link}}">{{$.i18n.Tr "settings.delete_current_avatar"}}</a>
+				</div>
+			</form>
+
 		</div>
 
 		{{if .Repository.IsMirror}}

templates/swagger/v1_json.tmpl

@@ -9066,6 +9066,10 @@
           "type": "boolean",
           "x-go-name": "Archived"
         },
+        "avatar_url": {
+          "type": "string",
+          "x-go-name": "AvatarURL"
+        },
         "clone_url": {
           "type": "string",
           "x-go-name": "CloneURL"