make conf.py's TRANSLATIONS customizable
auto config for the paths to the translations from a WP blog
fix flake8
restore original indent
move translations cfg helper to init.py + post-review cleanup
use str.format instead of format string
Merge pull request #1135 from tibonihoo/wp_qtranslate_and_custom_trans_pattern

Make sure conf.py is fully functional after importing a multi-lingual Wordpress site