Add `dragMode` config option

src/editor/model/Editor.js

@@ -67,6 +67,7 @@ export default Backbone.Model.extend({
     this.set('modules', []);
     this.set('toLoad', []);
     this.set('storables', []);
+    this.set('dmode', c.dragMode);
     const el = c.el;
     const log = c.log;
     const toLog = log === true ? keys(logs) : isArray(log) ? log : [];