Fix double click on sidebar on smaller screens (#906)

The problem was that on smaller screens or when resizing, v-navigation-drawer would change its value on its own, but these changes were not propagated to AppSidebar.
I also added a few missing type definitions for SidebarLinks.

frontend/layouts/admin.vue

@@ -7,7 +7,6 @@
       :bottom-links="bottomLinks"
       :user="{ data: true }"
       :secondary-header="$t('user.admin')"
-      @input="sidebar = !sidebar"
     />
 
     <TheSnackbar />
@@ -31,6 +30,7 @@ import { defineComponent, ref, useContext, onMounted } from "@nuxtjs/composition
 import AppHeader from "@/components/Layout/AppHeader.vue";
 import AppSidebar from "@/components/Layout/AppSidebar.vue";
 import TheSnackbar from "~/components/Layout/TheSnackbar.vue";
+import { SidebarLinks } from "~/types/application-types";
 
 export default defineComponent({
   components: { AppHeader, AppSidebar, TheSnackbar },
@@ -45,7 +45,7 @@ export default defineComponent({
       sidebar.value = !$vuetify.breakpoint.md;
     });
 
-    const topLinks = [
+    const topLinks: SidebarLinks = [
       {
         icon: $globals.icons.viewDashboard,
         to: "/admin/dashboard",
@@ -105,7 +105,7 @@ export default defineComponent({
       },
     ];
 
-    const bottomLinks = [
+    const bottomLinks: SidebarLinks = [
       {
         icon: $globals.icons.heart,
         title: i18n.t("about.support"),