Update to 0.7.4:

New feature: Big sorry to all translators who did all the hard work to translate xfdashboard to their language but their hard work was never included. It was my fault as I was to stupid to use Transifex client tool correctly :( Now I do not only update all locales already included but I will also fetch new ones. So the number of supported languages raised from 8 to 13. New ones are: da, de, kk, pl and tr (GH #155)
New feature: GDK backend is now optional and it will be enabled automatically if Clutter backend is available, i.e. FreeBSD does not install Clutter with GDK backend. (#13766, #13860)
New feature: Support also current xfconf versions (4.13.x). New xfconf version support native GPtrArray (from glib) for string lists and make dbus-glib deprecated. dbus-glib is only needed (and checked by configure script) if current stable xfconf (4.12.x) is used as its GPtrArray is still needed in this case. (#13824)
Fix compile issue when GTK+ prior to version 3.22 is installed. (GH #153)

New feature: Window tracker interface now supports a new experimental backend for GDK. The backend to use can be controlled with the new environment variable XFDASHBOARD_BACKEND. It can be either set to "x11" or "gdk". If this environment variable does not exists or is not set then the X11 backend is enforced as it is the known default behaviour of xfdashboard and GDK backend is marked as experimental. (GH #129)
New feature: Allow user to override CSS files of themes to apply user favourite settings. This cChanged the way and order how CSS files of themes are loaded: First the CSS resources defined in theme's theme file (xfdashboard.theme) are loaded, then user's global stylesheet ($HOME/.config/xfdashboard/themes/global.css) is loaded if it exists and at last user's theme related stylesheet ($HOME/.config/xfdashboard/themes/user-[THEME_NAME].css) is loaded if it exists. This should make user changes to themes more convinient as the user does not need to copy the whole theme to $HOME/.themes or $HOME/.local/themes and then make his changes. The user also does not need to update its theme each time the origin theme changes and re-copy and re-apply its changes. (GH #152)
Fixed visibility of menu items of installed application by relying more on Garcon as it does already all needed checks to determine the visibility of a menu item more reliable as xfdashboard. (GH #151)
Try to reduce usage of backend specific functions of Clutter
Lots of improvements especially at window tracker backends
As usual smaller bug-fixes and typos fixed
Also as usual: More API documentation


(youri)