Merge pull request #2380 from swilla/2.3/develop

PSR-0 Autoloading for Redirects Module
Mostly got Eloquent page creates working, validation is screwy.
other than streams…. @adamfairholm :'(
Merge pull request #2381 from swilla/2.3/develop

Variables Module Autoloading
Some eloquent work for pages plugin.
Merge branch '2.3/develop' of git://github.com/pyrocms/pyrocms into 2.3/develop
.EXT is not a thing, nobody is using php3 files anymore.
A couple of changes while investigating callback issues
Refactored Keywords module for psr-0 autoloading and some psr-2 tweaks
Forgot to add the models
Updated files library to use appliedkeyword model