fix menu memory, return memo button & add favicon

resources/js/components/Nav.vue

@@ -12,7 +12,7 @@
             <svg-vue icon="games" />
             <span v-bind:class="{ navhidden: !toggleNav }">Jeux</span>
         </router-link>
-        <div @click="toggleNav = !toggleNav"  class="nav-toggle mt-5">
+        <div @click="toggleNavBar"  class="nav-toggle mt-5">
             <svg-vue icon="arrow" v-bind:class="{ small: !toggleNav }" />
         </div>
     </nav>
@@ -25,6 +25,16 @@
             return {
                 toggleNav: true,
             }
+        },
+        mounted() {
+            let isTrueSet = (localStorage.getItem('navbar') === 'true');
+            (isTrueSet) ? this.toggleNav = true : this.toggleNav = false
+        },
+        methods: {
+            toggleNavBar() {
+                this.toggleNav = !this.toggleNav
+                localStorage.setItem('navbar', JSON.stringify(this.toggleNav));
+            }
         }
     }
 </script>