Appdata file for gwibber + hotot

Files for gwibber and hotot/hotot-qt

Gwibber:
Submitted to fedora bugzilla:
https://bugzilla.redhat.com/show_bug.cgi?id=1026133

Filed upstream:
https://bugs.launchpad.net/gwibber/+bug/1247704

Hotot:
Filed on Fedora rhbz
https://bugzilla.redhat.com/show_bug.cgi?id=1026145

The previous hotot file was wrong. It was named hotot-gtk and looked for hotot-gtk.desktop which doesn't exist. The desktop file for hotot-gtk is just hotot.desktop.