Added SessionManager
Added Flash
Added Flash in Guestbook
improved data binding
improved Where handling
Implemented OrderBy
Improved QueryBuilder & fixed Bug
Enabled gc and added some stats vars
Further improved ORM and fixed some small bugs in fk handling
Added TODO for implementing parametrized routes (e.g. /post/{id})
addChild now takes child view param as reference
Added possibility to Filters to run code if the check was successful or has failed
Implemented User model
Implemented Login
Implemented Register User
Added Usage statistics
Implemented Post model / Updated SQL script
implemented Post Overview
Added routes
Some small, irrelevant code changes