Extra keyboard and mouse bindings
Extra keyboard and mouse bindings

H/h/Home: first slide, mouse clicks: next/previous

Signed-off-by: Antonio Terceiro <terceiro@softwarelivre.org>

https://bugzilla.gnome.org/show_bug.cgi?id=671377

michaelgwood/pinpoint,danigm/pinpoint,potofcoffee/pinpoint,robclark/pinpoint,nekohayo/pinpoint,danigm/pinpoint,bpeel/pinpoint,robclark/pinpoint,tyll/pinpoint,michaelgwood/pinpoint,nekohayo/pinpoint,bpeel/pinpoint,robclark/pinpoint,GNOME/pinpoint,GNOME/pinpoint,potofcoffee/pinpoint,tyll/pinpoint