Die, tabs, die!
Don't assume identity between strings with the same value. Fix #41
Update Greek translation
Add new translations from Transifex.

Some of these are still partial but it is encouraging to see the list grow.
Add Transifex configuration file
Update documentation with info about submitting and releasing translations
Add German and Polish translations
Add AUTHORS file to acknowledge all people who contributed to Total Open Station
Rewrite utils.upref internals.

Fixes https://bitbucket.org/steko/totalopenstation/issue/45/
merge upref fixes

--HG--
extra : amend_source : 1f86275f29c5b44a81962c27a50abc3ffcea6d38
[i18n] move messages to default location, update documentation

--HG--
rename : po/de.po => locale/de/LC_MESSAGES/messages.po
rename : po/el.po => locale/el/LC_MESSAGES/messages.po
rename : po/es_ES.po => locale/es_ES/LC_MESSAGES/messages.po
rename : po/fa.po => locale/fa/LC_MESSAGES/messages.po
rename : po/fr.po => locale/fr/LC_MESSAGES/messages.po
rename : po/it.po => locale/it/LC_MESSAGES/messages.po
rename : po/pl.po => locale/pl/LC_MESSAGES/messages.po
rename : po/totalopenstation.pot => locale/totalopenstation.pot
rename : po/tr.po => locale/tr/LC_MESSAGES/messages.po