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
Yep. So we won't depend on Jansi's API directly and give us the chance to change to something else without breaking the client. This is more to describe the message purpose. A bit like log level. I think DisplayMode sound better.