Another go at improving the screen dimming and suspending setup:
Lockscreen invocation after 5 minutes, dimming at 10, sleep after 15 -
but only when not on AC.
It tries to also fix the screen being stuck off by reordering the
timeout and resume options of swayidle.
Since the existing wayland module basically describes everything about
my 'desktop environment' setup already anyway, might as well rename it
accordingly. Additionally, mako is important for notifications in this
environment so it moves here as well.
