Fix makemessages in develop.py
Enable python 3.4 on travis
Fix typo.
Fix #3155
Merge pull request #3168 from yakky/feature/travis_34

Enable python 3.4 on travis
Merge pull request #3166 from yakky/feature/makemsgs

Fix makemessages in develop.py
Merge pull request #3171 from yakky/feature/issue_3155

Fix typo.
Fix authors argument on python 3.4
Fix #3121
Merge pull request #3172 from yakky/feature/develop_py

Fix authors argument on python 3.4