hide up level button when at root path

Author: lkloon123

src/components/manager/GridView.vue

@@ -1,7 +1,7 @@
 <template>
     <div class="fm-grid">
         <div class="d-flex align-content-start flex-wrap">
-            <div class="fm-grid-item text-center" v-on:click="levelUp">
+            <div class="fm-grid-item text-center" v-on:click="levelUp" v-if="!isRootPath">
                 <div class="fm-item-icon">
                     <i class="fas fa-level-up-alt fa-5x pb-2"></i>
                 </div>

src/components/manager/TableView.vue

@@ -42,7 +42,7 @@
                 </tr>
             </thead>
             <tbody>
-                <tr>
+                <tr v-if="!isRootPath">
                     <td colspan="4" class="fm-content-item" v-on:click="levelUp">
                         <i class="fas fa-level-up-alt"></i>
                     </td>

src/components/manager/mixins/manager.js

@@ -49,6 +49,13 @@ export default {
     acl() {
       return this.$store.state.fm.settings.acl;
     },
+
+    /**
+    * Check if current path is at root level
+    */
+    isRootPath() {
+      return this.$store.state.fm[this.manager].selectedDirectory === null;
+    }
   },
   methods: {
     /**