move margin to display forbidden project element in case of no filters displayed

src/components/Projects/ProjectsMenu.vue

 <template>
   <div
-    v-if="chunkedNsortedFilters"
+    v-if="chunkedNsortedFilters.length > 0"
     id="filters-container"
-    class="margin-bottom"
   >
     <div
       class="ui styled accordion"

src/views/Projects/ProjectsList.vue

@@ -42,7 +42,7 @@
     <div
       v-if="configuration.DISPLAY_FORBIDDEN_PROJECTS"
       id="forbidden-projects"
-      class="ui toggle checkbox"
+      class="ui toggle checkbox margin-top"
     >
       <input
         :checked="displayForbiddenProjects"