do not trigger group update if name or avatar did not change

js/views/create_group_dialog_view.js

@@ -62,12 +62,14 @@
       return this;
     },
     onSubmit(groupName, avatar) {
-      window.MediumGroups.initiateGroupUpdate(
+      if(groupName !== this.groupName || avatar !== this.avatarPath) {
-        this.groupId,
+        window.MediumGroups.initiateGroupUpdate(
-        groupName,
+          this.groupId,
-        this.members,
+          groupName,
-        avatar
+          this.members,
-      );
+          avatar
+        );
+      }
     },
     close() {
       this.remove();