only allow dropping of files

static/js/oml.js

@@ -118,11 +118,15 @@
             });
             Ox.$document.on({
                 dragenter: function(event) {
+                    if (Ox.contains(event.originalEvent.dataTransfer.types, 'Files')) {
                         event.originalEvent.preventDefault();
                         event.originalEvent.stopPropagation();
                         if (!$('#importScreen').length && !$('#closedScreen').length) {
                             oml.ui.importScreen().appendTo(Ox.$body);
                         }
+                    } else {
+                        console.log(event.originalEvent.dataTransfer);
+                    }
                 },
                 dragover: function(event) {
                     event.originalEvent.preventDefault();

static/json/js.json

@@ -4,6 +4,7 @@
     "URL.js",
     "allItems.js",
     "annotation.js",
+    "annotationFolder.js",
     "annotationPanel.js",
     "appDialog.js",
     "appPanel.js",