Copied code and graphics from download dialog to radio settings tab.
Nothing has been removed or touched in the download dialog.
Absolutely nothing is functional yet, but it compiles.
Scrapped first move attempt. To much work to do it this way. Will try a more direct approach.
AppPreferencesDialog is done. All firmware settings can now be selected, since the horrible, horrible code from downloadDialog has been integrated.
Next step:
Remove fw selection code from the download dialog and instead display default firmware name.
Merge remote-tracking branch
'origin/dvogonen/move_firmware_selection_settings_988' into
bsongis/refactoring_firmware_interface

Conflicts:
	companion/src/apppreferencesdialog.cpp
	companion/src/apppreferencesdialog.h