DragSource DropTarget removed - 2/2 of commit
DragSource and DropTarget removed 1/2 of commmit
DnDController doesn't use HasDnDMouseEvents any...
[impovement]drag sources and targets now handle...
[improvement] gitignore now ignores gwt generat...
documentation on core updated
[improve] documentation for API improved.
[add] site documentation perporations