[gnome-control-center] (3 commits) Non-fast-forward update to branch robertroth/power-levels

[Robert Roth <robertroth src gnome org>]

The branch 'robertroth/power-levels' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  47a899e... power: set proper level offsets for battery levelbars

Commits added to the branch:

  aeca65c... wacom: Replace GObject boilerplate with G_DECLARE_TYPE (*)
  b51af0f... wacom: Replace ifdefs with #pragma once (*)
  b65bef8... power: set proper level offsets for battery levelbars

(*) This commit already existed in another branch; no separate mail sent