This removes a bunch of duplicated code, and also drops
a direct dependency on libsystemd-login.

https://bugzilla.gnome.org/show_bug.cgi?id=671858

The um-password-dialog combobox has a column in its model associated
with what password action to apply. Possible actions are:

- Normal password
- Set password at next login
- No password needed
- Lock account
- Unlock account

These actions are currently represented in the code with harded coded
numeric values (0-4).

This commit cleans up the hard coding to use a symbolic enumeration
instead.

https://bugzilla.gnome.org/show_bug.cgi?id=671858

The cheese support needs clutter, GStreamer and clutter-gst initialised.
Call cheese_gtk_init() for that.

https://bugzilla.gnome.org/show_bug.cgi?id=690760

It's required for the new OSD shortcuts.

https://bugzilla.gnome.org/show_bug.cgi?id=690616

This reverts commit eb7f3867.

Only completes the panel names for now.

Due to the way I split off the cc-edit-dialog's header.

Olivier Fourdan authored Nov 29, 2012 and Bastien Nocera committed Dec 20, 2012

Action type comes from GSettings and may have been changed
to some invalid value, causing a segmentation fault in
control-center if the value is larger than the known action
types. This can also occur when downgrading from a version
with more possible actions.

Adds a sanity check to verify the given action type value
is within the bounds of the known action types.

https://bugzilla.gnome.org/show_bug.cgi?id=689265

Use ↺ and ↻ for the touchring buttons, and add context to the
touchstrip labels.

Olivier Fourdan authored Nov 29, 2012 and Bastien Nocera committed Dec 20, 2012

Using "up" and "down" on a ring is ambiguous, better
use "CW" or "CCW" to indicate the circular motion on
touch rings.

https://bugzilla.gnome.org/show_bug.cgi?id=689264

Olivier Fourdan authored Sep 07, 2012 and Bastien Nocera committed Dec 20, 2012

for pad buttons, once the OSD window patch is
merged in gnome-settings-daemon.

https://bugzilla.gnome.org/show_bug.cgi?id=683567

This reverts commit a9683772.

Giovanni Campagna authored Oct 31, 2012 and Bastien Nocera committed Dec 20, 2012

Show applications using the message tray, and
allow configuring in what way the shell presents them.

The set of applications shown include all applications that ever
showed a notification in gnome-shell and all applications that have
a boolean X-GNOME-UsesNotifications key set to true in their desktop file.

https://bugzilla.gnome.org/show_bug.cgi?id=685928

Matthias Clasen authored Nov 26, 2012 and Bastien Nocera committed Dec 20, 2012

The design can be found here:
https://live.gnome.org/Design/SystemSettings/Power

https://bugzilla.gnome.org/show_bug.cgi?id=689614