Fix for regex rules with commas, pipes

Fixes for regex rules with commas, pipes per #544 -- thanks @KuenzelIT and @tortuetorche!

Also, I've done some cleanup of our issue queue, PRs, docs, and simplified our development structure.

Former will no longer use a development branch, and the 4.0 branch is now deprecated and will be removed after it appears safe to do so.

All development should now take place on the master branch. Laravel 4.0 support is now bug-fix-only mode using the 3.x.x tags. -- new features will target only laravel 5.

Happy Former'ing!