Add tf_id as index
Merge branch 'rhbz1077439' of github.com:zanata/zanata-server into rhbz1077439
Merge branch 'rhbz1077439' of github.com:zanata/zanata-server into rhbz1077439
Use text flow id index for excluding option in tm search
Merge branch 'rhbz1077439' of github.com:zanata/zanata-server into rhbz1077439