closes https://github.com/NodeBB/NodeBB/issues/3843

templates/groups/details.tpl

@@ -1,5 +1,6 @@
 <div component="groups/container" class="groups details row">
 	<div component="groups/cover" style="background-image: url({group.cover:url}); background-position: {group.cover:position};">
+		<!-- IF group.isOwner -->
 		<div class="controls">
 			<span class="upload"><i class="fa fa-fw fa-4x fa-upload"></i></span>
 			<span class="resize"><i class="fa fa-fw fa-4x fa-arrows"></i></span>
@@ -7,6 +8,7 @@
 		</div>
 		<div class="save">[[groups:cover-save]] <i class="fa fa-fw fa-floppy-o"></i></div>
 		<div class="indicator">[[groups:cover-saving]] <i class="fa fa-fw fa-refresh fa-spin"></i></div>
+		<!-- ENDIF group.isOwner -->
 	</div>
 
 	<div class="col-xs-12">