[WIP] i18n and issue fixes

[uaktags]

This PR is to incorporate i18n support as well as close out a few ongoing issues:

#36 is solved by #52 which has been merged. #5 is in the process of being solved by this PR. Translations are json based (but the library supports yml and ini too). Each module can bring their own translation files, and each translation can be a normal const or can be a vsprintf const to support variables. #49 was also incorporated following Christopher's updated details on the subject