Self-referencing tables & table dragging bug fix
Self-referencing tables & table dragging bug fix

Allow fields to reference other fields on the same table. They can't
reference themselves though. Fixed bug where tables couldn't be dragged
after being deleted and re-created. This was caused by the original
table not being completely deleted, so jsplumb was attached to the wrong
container.

prahladyeri/valchemist,prahladyeri/valchemist,prahladyeri/valchemist