warn if a .ui has buttons but none of them is set as the default button
warn if a .ui has buttons but none of them is set as the default button

can probably only do this for full dialogs rather than .ui snippets

Change-Id: Ic8269e1c909fee3acec6ac06c36b9107cb6ff5db

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core