Forestry Reformation

This is one of the three PRs as part of my big contribution to Forestry. The changes are:

* Updated to BC API 6.0.x
* Re-implementing the pipes plugin
* Converting to the vanilla assets lang system
* Re-structuring the main repo.

This PR contains the new localization system. There's more info about it in my updated README. The other PRs will be to the API repo with the necessary changes to make Forestry BC 6.0.x compatible, and finally the main repo. However, I need the first two to be pulled so I can update the submodules.

If you have any questions, let me know.