[FIX] $parameters set as optional parameter

$parameters should be optiona in Controller::render() function
[FIX] pre set $this->params as array
[MOD] Renamed clearQuery function

Renamed clearQuery function to clear() and change visibility to private
[MOD] Reorganize Controller class

Add new funtions setRequest,getRequest, getFormBuilder
[NEW] Add new Cobbler\Http\Post

Add new class Post which represent global table $_POST
[NEW] Add new class Cobbler\Form\FormBuilder

Add new class which will be create form
[MOD] Reorganize FrontController

Set request to each object controller