- When loading a file from history the users was always asked to discard changes.
- Bitmap items: the PPI setting was not displayed.
- Text items: the PPI setting was displayed.
- Poly items: the Rotation option was not displayed.
Improve dialog layout and fix UI policy issues with all of the dialog
boxes in the Gerbview and Pcbnew code paths.
Updated the use of component to footprint where appropriate.