Revert "Two new dialogs defined."

This reverts commit d9f97016e2c65306a8f5baad267e43edc38871eb.
Update DONATIONS.txt
Merge branch 'origin/next'

Conflicts:
	companion/src/apppreferencesdialog.cpp
	companion/src/apppreferencesdialog.h
	companion/src/apppreferencesdialog.ui
	companion/src/fwpreferencesdialog.ui
	companion/src/imgpreferences.ui
	companion/src/mainwindow.cpp