[twitter] If the user details are unset, unset the user and reset the caps
[twitter] If the user details are unset, unset the user and reset the caps

lcp/mojito,lcp/libsocialweb,lcp/libsocialweb,GNOME/libsocialweb,ThomasBollmeier/libsocialweb-flickr-oauth,lcp/mojito,lcp/mojito,GNOME/libsocialweb,ThomasBollmeier/libsocialweb-flickr-oauth,GNOME/libsocialweb,lcp/libsocialweb,ThomasBollmeier/libsocialweb-flickr-oauth