Correct unnecessary use of the phrase "whether or not"
Correct unnecessary use of the phrase "whether or not"

Also correct use of nouns in place of verbs in a few areas, and make the
consistent the terminology of signing in/out.

Signed-off-by: Jonny Lamb <3d1fb3642aaab2ff70e3392a5ab916bf99eed6a3@collabora.co.uk>

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