add options to select apps that must be displayed in the top menu (replace exteral sites option)

src/SideMenu.vue

@@ -63,7 +63,7 @@ export default {
                 var dataId = parent.getAttribute('data-id')
                 dataId = dataId !== null ? dataId : ''
 
-                if (this.ignoreExternalSites && dataId.indexOf('external_index') !== -1) {
+                if (!parent.classList.contains('app-hidden')) {
                     continue
                 }
 
@@ -113,7 +113,6 @@ export default {
         this.retrieveApps()
         this.retrieveLogo()
         this.forceLightIcon = document.querySelector('#side-menu-container').getAttribute('data-forcelighticon') == 1;
-        this.ignoreExternalSites = document.querySelector('#side-menu-container').getAttribute('data-externalsitesintopmenu') == 1;
 
         const menu = document.querySelector('#appmenu')