Extend locale support to include javascript files (#3367)

* Enable text extraction from *.js (but not *.min.js)

Also don't extract from gui/**/js/lib

* Move bower, node, grunt build files to root and remove .build folder. Fix backstretch

Signed-off-by: miigotu <miigotu@gmail.com>

* Update translations, extract a few translations from js, fix gitignore for moved .build tools, grunt

Signed-off-by: miigotu <miigotu@gmail.com>

* Translate language codes to language name in interface language config

* Fix #3369 - Use sickbeard.SORT_ARTICLE in places it was not being honored