Data transforms now implement ISelectableAttributes.
ForeignDataMappingTransform column metadata now updates dynamically.

Change-Id: Ib9b39cf9be34c4e29ae010f987f9811f29457ce7
fixed bug in keyDown event handling on Desktop app.

Change-Id: I0a1ddc1cd8ee72a69e6ee826323f5882479c9a9a