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
I suggest: "You do not have a Zanata server URL in your user config file (zanata.ini). Please refer to http://zanata.org/help/cli/cli-configuration/ for how to add a server URL.