rename forceRestart to needsHardRestart

Change-Id: Ic3e3b6733f3d4e7bbf7b9a2715fd2d74fb3f9a2d
Reviewed-by: Karsten Heimrich <karsten.heimrich@digia.com>
fix that restart is only triggered if the user wants it

Change-Id: I7814e94819088a4ee82fea9a120d99be6f63d934
Reviewed-by: Karsten Heimrich <karsten.heimrich@digia.com>