Both tabs now use Stackswitchers to allow users to switch between the
"on battery" and "on ac" settings. This gets rid of the huge table we
used to have and makes it easier to hide all "on battery" settings.

The icons were lost during the transition from GtkStock.

The custom brightness notification was already dropped in
commit 5ac47c84, but this
file was forgotten at the time.

This also means the power-manager's panel-plugin is now compatible with
most modern icon-themes.

That is until notifyd supports symbolic icons in its
notification bubbles.

This patch uses the PowerManagerButton to implement the tray icon.
It doesn't do the show when (dis)charging stuff since it will
display different battery types now, however that can be added
back if desired.

Integrate Light Locker configuration into Xfce Power Manager. This
allows proper settings synchronization between the two applications
and eliminates some of the hackiness used in Light Locker Settings
to accomplish the same effect, and streamlines similar tools into
a single location. This depends on light-locker 1.5.1 configured
with the GSettings backend.

Signed-off-by: Eric Koegel <eric.koegel@gmail.com>

The blank timeout cannot be longer than the DPMS timeouts,
the DPMS timeouts cannot be shorter than the blank timeout
simply because blanking after the display is already suspended
doesn't make any sense (and vice versa).

in the settings dialog for consistency with other Xfce settings
dialogs.

Add information on 1.3.1 release and prepare for 1.3.2