Unify the enter and create page.
Unify the enter and create page.

Refactor a lot the surrounding code.
Missing piece: adapting labels for the EmpathyAccountWidget in case of
creation vs. entering details.

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