onDragStart and onDragOver events added

onDragStart now selects the file/folder
onDragOver kills the default event, so we don't get the not allowed icon
etc
stopPropagation event added too onDragOver
Check if we have a CM instance before focus
Only setOption if we have a CM instance
Only focus on editor if we have a CM instance
On dragging files/folders, get the path if a file, otherwise go with the
folder path.
If we have CTRL key down, copy the selectedFiles and paste to the
tgtPath just established
Display temp message about move function coming soon
Update to match main JS file