chore(context-pad): minor connect / remove tweek

* remove does not activate on dragstart
* connect does not trigger default drag behavior

lib/features/context-pad/ContextPadProvider.js

@@ -87,6 +87,10 @@ ContextPadProvider.prototype.getContextPadEntries = function(element) {
   var businessObject = element.businessObject;
 
   function startConnect(event, element, autoActivate) {
+
+    // prevent dragging of connection symbol
+    event.preventDefault();
+
     connect.start(event, element, autoActivate);
   }
 
@@ -348,8 +352,7 @@ ContextPadProvider.prototype.getContextPadEntries = function(element) {
         className: 'bpmn-icon-trash',
         title: translate('Remove'),
         action: {
-          click: removeElement,
-          dragstart: removeElement
+          click: removeElement
         }
       }
     });