Updated for Errai 2.3.0.Final

I've put included the modules that will exist in Errai 3.0 but don't yet exist in Errai 2.3.0 in comments. This is mainly for insurance so we don't forget to add them in for the next release of the Errai BOM.

If you don't like the look of the comments, let me know and I'll update the PR to lose them.