Finished tabbing order.
Added all buttons from the top row.
Removed Palettes, Piano Keyboard, Inspector and MuseScore connect.
	modified:   mscore/inspector/inspector.cpp
	modified:   mscore/musescore.cpp
	modified:   mscore/palettebox.cpp
	modified:   mscore/pianoroll.cpp
	modified:   mscore/pianotools.cpp
	modified:   mscore/webpage.cpp