Fix jQuery add_basket form selector. Resolves #405

[azlotnikov]

Resolves #405

Changelog

### Fixed
- Fix jQuery `add_basket_button` form  selector for `ProductBundle:Product:view.html` and `ProductBundle:Product:view_thumbnail.html`

Subject

Fix jQuery add_basket_button form selector for ProductBundle:Product:view.html and ProductBundle:Product:view_thumbnail.html

[azlotnikov]

I tried to figure out, why tests failed on php <= 5.5, and not failed 19 days ago (last build). Thats what I found:
Tests fail here inside DataGridBundle (2.2.1) Sonata\DatagridBundle\Pager\Doctrine\Pager

    public function computeNbResult()
    {
        ...
        $countQuery->select(sprintf(
            'count(DISTINCT %s.%s) as cnt',
            current($countQuery->getRootAliases()),
            current($this->getCountColumn())
        ));

But 2.2.1 version was released only 17 days ago, and before this code looks like:

    public function computeNbResult()
    {
        ...
        $countQuery->select(sprintf('count(DISTINCT %s.%s) as cnt', $countQuery->getRootAlias(), current($this->getCountColumn())));

The problem is in getRootAlias() and getRootAliases() functions.

Quick solution:
Fix composer.json at "sonata-project/datagrid-bundle": "2.2.0"

Good solution:
Figure out, what happened

@greg0ire, what do you think?

[jordisala1991]

This is what needs to be done to fix those tests: sonata-project/SonataMediaBundle#1194

[azlotnikov]

@jordisala1991, thanks
I'll make a new PR with tests fix

[jordisala1991]

Let's trigger again build? oh, wait, you will have to rebase first 😄 my bad

[azlotnikov]

@jordisala1991 rebase - done

[greg0ire]

Thanks @Zrazor !