Replace all use of <a> + href='#' with proper buttons

src/components/notifications/notifications.vue

@@ -17,7 +17,7 @@
         </div>
         <button
           v-if="unseenCount"
-          class="read-button"
+          class="button-default read-button"
           @click.prevent="markAsSeen"
         >
           {{ $t('notifications.read') }}
@@ -41,15 +41,15 @@
         >
           {{ $t('notifications.no_more_notifications') }}
         </div>
-        <a
+        <button
           v-else-if="!loading"
-          href="#"
+          class="button-unstyled -link"
           @click.prevent="fetchOlderNotifications()"
         >
           <div class="new-status-notification text-center panel-footer">
             {{ minimalMode ? $t('interactions.load_older') : $t('notifications.load_older') }}
           </div>
-        </a>
+        </button>
         <div
           v-else
           class="new-status-notification text-center panel-footer"