french translation
use AppData/Nulloy as rcDir when installed into Windows ProgramFilesDir
toggle win7 taskbar option
Merge branch 'devel' into qt5

Conflicts:
	src/common.cpp
Merge remote-tracking branch 'upstream/devel' into qt5

Conflicts:
	src/player.cpp
	src/preferencesDialog.cpp
	src/preferencesDialog.ui