We should be detecting changes to files in the git repository instead.

GitThreadPool is an AnjutaThreadPool subclass that decorates each enqueued
GitCommand object with a reference to the repository that the plugin is
currently working with.

The new GitCommand is used for commands that use libgit2 in a thread, while
GitProcessCommand is for the older process-based commands.

 * Labels became really long in some translation (German for example) => use line-wrap
 * If you have a small screen then the window can because to high with many commands
 => use scrolled_window if needed

Use settings from monospace-font-name key of org.gnome.desktop.interface
settings schema instead of document-font-name key as the default font.

Loading a big project can take quite some times, decrease the priority to allow
running the GUI