* "No users list" mode works now
+ New widget: no_prompt_login_widget
+ Menus support for users/languages/sessions models
+ New theme: gtk-greeter-160
+ Message dialog buttons now stylable
* Fixed: language/session selection now works with menus
* If no session selected (no default and no sessions_widget) then using first in the list
* Fixed: keys names - user-image, list-image
Merge branch 'private/theme-160' into develop
+ New option: appearance/hide-prompt-text
* Theme "classic" renamed to "gtk-greeter-150"
+ For image menu items without text "set_widget_text" sets tooltip
* Updating translations: ru, be, es

Signed-off-by: Pablo Lezaeta <prflr88@gmail.com>
Close #6
* gtk-greeter-150: "show password" - hide on start
+ For buttons with child != GtkLabel "set_widget_text" sets tooltip
+ New option: power/button-press-action
* Fixed: session image, obsolete models in .ui files
* Theme updated: gtk-greeter-160
* Fixed: focus "blinking" when user selection changed
* Theme updated: gtk-greeter-160
* Using 'set_widget_sensitive' for sessions/languages widgets
* Fixed: bug with constrast mode switching
* Theme updated: gtk-greeter-160
* Fixed: background for multiple monitors
* Some other background fixes
* Fixed a multimonitor issue.
Fixed an issue where the login screen would always show up at the topleftmost corner
of your entire X layout while keeping the width and height of your primary monitor.
This patches it so it takes the x and y of your primary monitor.
Fixes #7