Hide Update button to non-admin users

Change-Id: I600feff5833ed45b661534d69670355b1f7e8f82

jams-react-client/src/components/Sidebar/Sidebar.js

@@ -44,7 +44,7 @@ export default function Sidebar(props) {
 
   React.useEffect(() => {
 
-      if(auth.isUpdateAvailable())
+      if(auth.isUpdateAvailable() && auth.hasAdminScope())
           setOpen(true)
 
   }, [mainPanel]);

jams-react-client/src/layouts/Admin.js

@@ -117,6 +117,7 @@ export default function Admin({ ...rest }) {
 
   const handleQuery = () => {
     setQuery(true);
+    if (auth.hasAdminScope()) {
         if (auth.isActivated()) {
             setDialogMessage(
                 "A new version of JAMS is available. Would you like to update now?"
@@ -130,6 +131,9 @@ export default function Admin({ ...rest }) {
             setMessageYes("Yes, go to Jami Store");
             setMessageNo("No thanks");
         }
+    } else
+        setDialogMessage("You are not allowed to access this section. Please contact your administrator to get administrator privileges.");
+
   };
 
   // initialize and destroy the PerfectScrollbar plugin