FIX: PaginatorTable header still shows even if no items exist

Closes #478

frontend/src/components/PaginatorTable.vue

@@ -6,7 +6,7 @@
                :per-page-options="itemsPerPageOptions"
                v-if="items && filtered_and_sorted_items.length > 0 && !hideTopPagination"/>
 
-    <div class="pagination_container" v-if="items">
+    <div class="pagination_container">
       <slot name="content_skeleton_item" v-if="!items || items.length === 0"></slot>
       <b-table :items="items" v-bind="$attrs" :current-page="current_page" :per-page="items_per_page">
         <template v-for="(_, slot) of $scopedSlots" v-slot:[slot]="scope"><slot :name="slot" v-bind="scope"/></template>