Display latest sync time for pull mirrors on the repo page

Author: dsseng

templates/repo/header.tmpl

@@ -27,7 +27,11 @@
 					</div>
 				</div>
 				{{if $.PullMirror}}
-					<div class="fork-flag">{{ctx.Locale.Tr "repo.mirror_from"}} <a target="_blank" rel="noopener noreferrer" href="{{$.PullMirror.RemoteAddress}}">{{$.PullMirror.RemoteAddress}}</a></div>
+					<div class="fork-flag">
+						{{ctx.Locale.Tr "repo.mirror_from"}}
+						<a target="_blank" rel="noopener noreferrer" href="{{$.PullMirror.RemoteAddress}}">{{$.PullMirror.RemoteAddress}}</a>
+						{{ctx.Locale.Tr "repo.mirror_sync"}} {{TimeSinceUnix $.PullMirror.UpdatedUnix ctx.Locale}}
+					</div>
 				{{end}}
 				{{if .IsFork}}<div class="fork-flag">{{ctx.Locale.Tr "repo.forked_from"}} <a href="{{.BaseRepo.Link}}">{{.BaseRepo.FullName}}</a></div>{{end}}
 				{{if .IsGenerated}}<div class="fork-flag">{{ctx.Locale.Tr "repo.generated_from"}} <a href="{{(.TemplateRepo ctx).Link}}">{{(.TemplateRepo ctx).FullName}}</a></div>{{end}}