Functional for embedded symfony2 form. Add new parameter to config bundle.

Implements functionality for symfony2 embedded form. Creates fix for Creates fix for the annotation reader as it didn't read extended class annotation. Add new parameter to config bundle.

Example:

    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add(
            'form1',
            new FormFirstType()
        );
        $builder->add(
            'form2',
            new FormSecondType($this->user)
        );
    }