change call sequence

before this change,
dispatcher call view, and view call controller,
but after this change,
dispatcher call controller, and controller call view.
This change is to create 2 type of new form,
Assessment need two kind of new form,
first is for ask URL only,
second is for ask other params.
Add SharedParams.php

This is used as global(Share params in helper, controller, view)
use Singleton pattern for SharedParams.php
make $SP in Dispatcher before call controller
revise helpers
in controller modelclass and dirname is unified.
refactering