refactoring: update severals components

src/components/CloserButton.vue

@@ -15,18 +15,10 @@ You should have received a copy of the GNU Affero General Public License
 along with this program. If not, see <http://www.gnu.org/licenses/>.
 -->
 <template>
-  <button class="side-menu-opener side-menu-closer" :arial-label="label">
-    <span v-text="label"></span>
+  <button
+    class="side-menu-opener side-menu-closer"
+    :arial-label="label"
+  >
+    <span>{{ t('side_menu', 'Close the menu') }}</span>
   </button>
 </template>
-
-<script>
-export default {
-  name: 'CloserButton',
-  data() {
-    return {
-      label: t('side_menu', 'Close the menu'),
-    }
-  }
-}
-</script>