Add archived label for code search results in archived repo's (#17817)

* Add archived label for code search results in archived repo's

* Remove trailing whitespace

Co-authored-by: Lauris BH <lauris@nix.lv>

Author: jpraet

templates/explore/code.tmpl

@@ -37,7 +37,13 @@
 						{{$repo := (index $.RepoMaps .RepoID)}}
 						<div class="diff-file-box diff-box file-content non-diff-file-content repo-search-result">
 							<h4 class="ui top attached normal header">
-								<span class="file"><a rel="nofollow" href="{{$repo.HTMLURL}}">{{$repo.FullName}}</a> - {{.Filename}}</span>
+								<span class="file">
+									<a rel="nofollow" href="{{$repo.HTMLURL}}">{{$repo.FullName}}</a>
+										{{if $repo.IsArchived}}
+											<span class="ui basic label">{{$.i18n.Tr "repo.desc.archived"}}</span>
+										{{end}}
+									- {{.Filename}}
+								</span>
 								<a class="ui basic tiny button" rel="nofollow" href="{{$repo.HTMLURL}}/src/commit/{{$result.CommitID | PathEscape}}/{{.Filename | PathEscapeSegments}}">{{$.i18n.Tr "repo.diff.view_file"}}</a>
 							</h4>
 							<div class="ui attached table segment">