Add HANDLES_OPEN flag to GearyApplication
Fixes Geary not working as a mailto: handler due to the GAppplication DBus implementation not passing on the open action if not set.
See glib#1853
Fixes #522 (closed)
Fixes Geary not working as a mailto: handler due to the GAppplication DBus implementation not passing on the open action if not set.
See glib#1853
Fixes #522 (closed)