Add stars to admin panel repo list

NumStars were removed from the repository list in the admin panel but
the table header was never removed which made the table look broken.
Stars are back now, so bringing back the number.

templates/admin/repo/list.tmpl

@@ -35,6 +35,7 @@
 									<td><a href="{{AppSubURL}}/{{.Owner.Name}}/{{.Name}}">{{.Name}}</a></td>
 									<td><i class="fa fa{{if .IsPrivate}}-check{{end}}-square-o"></i></td>
 									<td>{{.NumWatches}}</td>
+									<td>{{.NumStars}}</td>
 									<td>{{.NumIssues}}</td>
 									<td>{{.Size | FileSize}}</td>
 									<td><span title="{{DateFmtLong .Created}}">{{DateFmtShort .Created}}</span></td>