Board Thread:Code Review/@comment-24757753-20180805110740/@comment-24757753-20180925114333

All the changes have now been merged to the main script! I've also added some docs at I18n-js regarding `cacheVersion` option usage.

For development, I've also exposed I18n-js's  function: This could be handy when working on a new script but not wanting to upload often-changing i18n to the wiki, or just for testing i18n changes.