Glade: fix sizing in SIP accounts widget
Glade: fix sizing in SIP accounts widget

https://bugzilla.gnome.org/show_bug.cgi?id=646630

GNOME/telepathy-account-widgets,GNOME/telepathy-account-widgets,GNOME/telepathy-account-widgets,Distrotech/telepathy-account-widgets,Distrotech/telepathy-account-widgets