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/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}}