rhbz1110627 zanata init

https://bugzilla.redhat.com/show_bug.cgi?id=1110627
and https://bugzilla.redhat.com/show_bug.cgi?id=1038852

Depends on https://github.com/zanata/zanata-api/pull/15 and https://github.com/zanata/zanata-server/pull/520
Mentioning unique is probably useless here, since we do not provide a way for the user to check whether it is unique. They should only have to think about whether it is unique if they have chosen a name and the chosen name is not available.