Merge branch 'fabric-emptyStringViewOnly' into 'master'

fixed problem of empty string not displaying fabric image

See merge request !319

javascript/src/Plugins/qfq.fabric.js

@@ -336,15 +336,15 @@ $(function (n) {
                 that.userChangePossible = true;
             });
         } else {
-            if(!isReadOnly) { 
-            	that.setBackground();
+            that.setBackground();
+            if(!isReadOnly) {
 	        that.setBrush();
             }
             that.canvas.renderAll();
             that.userChangePossible = true;
             this.history.put(this.canvas.toJSON());
         }
-        var defaultColor = $fabricElement.data('fabric-color') || false;
+        var defaultColor = this.parentElement.data('fabric-color') || false;
         if (defaultColor) {
             this.setColor(defaultColor);
         }