Fixed wrong AppSubUrl in multiple templates (#10447)

* Fixed wrong AppSubUrl in OAuth2 app edit page

* Replaced all other occurrences of $.AppSubURL for support of sub-paths

templates/explore/code.tmpl

@@ -18,7 +18,7 @@
                 </h3>
 				<div>
 					{{range $term := .SearchResultLanguages}}
-					<a class="ui {{if eq $.Language $term.Language}}primary {{end}}basic label" href="{{$.AppSubURL}}/explore/code?q={{$.Keyword}}{{if ne $.Language $term.Language}}&l={{$term.Language}}{{end}}">
+					<a class="ui {{if eq $.Language $term.Language}}primary {{end}}basic label" href="{{AppSubUrl}}/explore/code?q={{$.Keyword}}{{if ne $.Language $term.Language}}&l={{$term.Language}}{{end}}">
 						<i class="color-icon" style="background-color: {{$term.Color}}"></i>
 						{{$term.Language}}
 						<div class="detail">{{$term.Count}}</div>

templates/repo/settings/lfs_locks.tmpl

@@ -34,7 +34,7 @@
 								{{end}}
 							</td>
 							<td>
-								<a href="{{$.AppSubUrl}}/{{$lock.Owner.Name}}">
+								<a href="{{AppSubUrl}}/{{$lock.Owner.Name}}">
 									<img class="ui avatar image" src="{{$lock.Owner.RelAvatarLink}}">
 									{{$lock.Owner.DisplayName}}
 								</a>

templates/user/settings/applications_oauth2_edit.tmpl

@@ -30,14 +30,14 @@
 			<div class="item">
 				<!-- TODO add regenerate secret functionality */ -->
 				{{.i18n.Tr "settings.oauth2_regenerate_secret_hint"}}
-				<form class="ui form ignore-dirty" action="{{$.AppSubURL}}/user/settings/applications/oauth2/{{.App.ID}}/regenerate_secret" method="post">
+				<form class="ui form ignore-dirty" action="{{AppSubUrl}}/user/settings/applications/oauth2/{{.App.ID}}/regenerate_secret" method="post">
 					{{.CsrfTokenHtml}}
 					<a href="#" onclick="event.target.parentNode.submit()">{{.i18n.Tr "settings.oauth2_regenerate_secret"}}</a>
 				</form>
 			</div>
 		</div>
 		<div class="ui attached bottom segment">
-			<form class="ui form ignore-dirty" action="{{$.AppSubURL}}/user/settings/applications/oauth2/{{.App.ID}}" method="post">
+			<form class="ui form ignore-dirty" action="{{AppSubUrl}}/user/settings/applications/oauth2/{{.App.ID}}" method="post">
 				{{.CsrfTokenHtml}}
 				<div class="field {{if .Err_AppName}}error{{end}}">
 					<label for="application-name">{{.i18n.Tr "settings.oauth2_application_name"}}</label>