Added resource_extractor.py
Added resource_extractor.py

There are a *lot* of translations for the string files from AOSP.  This
automates the extraction of them so it's not a gigantic PITA to copy all
of the translations by hand.

lucasxas/joda-time-android,xfumihiro/joda-time-android,andyao/joda-time-android,rjhonsl/joda-time-android,dlew/joda-time-android,ptornhult/joda-time-android,dlew/joda-time-android,xfumihiro/joda-time-android,ptornhult/joda-time-android,rjhonsl/joda-time-android,netfirms/joda-time-android,andyao/joda-time-android,lucasxas/joda-time-android,netfirms/joda-time-android