(WIP) Move to dynamic objects, adds env & source factory
WIP: Huge overhaul. min app works!
Remove unneeded checkType in MinApp
Fix Files and Groups controllers, cleanup unused stuff
Merge branch 'WIP_dynamic_objects' into lessphp-dev3

Conflicts:
	min/lib/Minify/Controller/Base.php
	min/lib/Minify/Controller/MinApp.php
	min/lib/Minify/Source.php