(cq) add alt attribute on app icon

src/SideMenuBigApp.vue

@@ -17,7 +17,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
 <template>
     <li v-bind:class="classes">
         <a v-bind:href="href" :target="target" v-bind:title="label">
-            <img class="side-menu-app-icon" v-bind:src="icon"></span>
+            <img class="side-menu-app-icon" v-bind:src="icon" v-bind:alt="label" />
             <span class="side-menu-app-text" v-html="label"></span>
         </a>
     </li>