Update admin module 5
Pull request Berend Baas

Conflicts:
	lib/modules/admin/Module.class.php
Rename Request.class.php to URL.class.php
Introduced URL class & small fixes

The new URL class has replaced the Request & URI class. This will
improve readabilty and makes it easier create new URLs in modules.

This update also includes:
- define moved from config.php to index.php. This way you won't try to
redefine if you load the config a 2nd time.
- mysql fetch and fetchAll return a bool when failed, so you don't have
to use empty() to check if the query was succesfull.
- Namespace had a syntax error in the admin, install & uninstall
classes of every module (/ was used instead of \)
- Updated the admin module.
Merge branch 'develop' of https://github.com/miWebb/miRaptor into develop

Conflicts:
	lib/modules/admin/Module.class.php
Update admin module 6

improved the admin structure by introducing the ModuleHandleAbstract
class and splitting the functionality into multiple classes.
Update admin module 7

A simple implementation of the ModuleHandleSite. This has some security
issues, but is used to start the development of the Admin classes of
their respected Modules.
Added admin functionality stylesheet module

Implemented CRUD functionality for stylesheet module.