Some changes, and added a Launcher class, with respawn support.

That was meant to be used alongside startup notifications, but whatever.
Enable images in menus by default.
Automatically autostart pcmanfm. Also, added the option to launch an application and wait until it exits.

It can be also be achieved during autostart by setting X-Vera-Launch-Sync at true.
Set DMZ-White as the default cursor theme.
dbus: added "ninja-shortcut" capabilities (--> the CTRL+ALT+SPACE shortcut found in Semplice 2.0+).

It is fully configurable via settings.

Added settings:
last-exit-action (enum)
lock-last-exit-action
ninja-shortcut

Added methods in the DBusService class:
store_exit_action() (private)
NinjaShortcut() (published)
Lock() (published)
Added hide-exit-window setting. If enabled, vera will not ask for confirmation when executing an exit action.

Added settings:
hide-exit-window

Added methods to DBusService:
show_dialog() (private)
0.28
Merge branch 'master' into debian
0.28-1