visibility: use F1-6 keys instead
numbers should only be used for repeating commands...
move_relative: fix wrt. hidden calendars
not sure if this is the right approach
move_now: always deselect so we don't get stuck
fixes an annoying bug when trying to move when selecting something
t: don't center view automatically
sometimes you just want to jump to now without messing with your view.
Maybe we should still center_view when we're not in the range at all.
dont crash on alignment for now
anything rendering related should probably be localtime...