Add files type icons and colors

src/app/pages/editor/editor.page.html

@@ -23,7 +23,7 @@
           *ngFor="let node of editorService.immutableNodes"
         >
           <div class="host-icons">
-            <i class="type-icon fa" [ngClass]="typeIcons[(node.isNorm() ? 'node' : node.type)] + ' ' + (node.isNorm() ? 'node' : node.type)" title="WYSIWYG Node"></i>
+            <i class="type-icon fa" [ngClass]="typeIcons[(node.isNorm() ? 'node' : node.type)] + ' ' + (node.isNorm() ? 'node' : node.type)"></i>
             <button (click)="onOptionsClick($event, node)">
               <i class="fa fa-ellipsis-v" title="Node options"></i>
             </button>

src/app/pages/editor/editor.page.scss

@@ -28,6 +28,10 @@ ion-icon.invisible {
   &.database_ref {
     color: var(--noded-background-db);
   }
+
+  &.file_ref {
+    color: var(--noded-background-files);
+  }
 }
 
 .host-add-button {

src/app/pages/editor/editor.page.ts

@@ -97,6 +97,10 @@ export class EditorPage implements OnInit {
 
     popover.onDidDismiss().then(result => {
       console.log('adding node', result.data);
+      if ( !result.data ) {
+        return;
+      }
+
       this.editorService.addNode(result.data, position, positionNodeId);
     });