Squashed commit of the following:

commit 1c40a7a01c2011b41e6741ad11187c197a28b7f8
Author: hoffmaje <jgk.hoffmann@gmail.com>
Date:   Wed Jan 9 16:09:03 2013 +0100

    Renamed Phrase.phrase into Phrase.value.
    Remove FK user from model Phrase.