Zend controller test contains

This allow to match a partial query node value content in AbstractHttpControllerTestCase:: assertQueryContentContains, and not only an exact match.
A node with the value "foo, bar, lol" would match "foo", "foo,", "bar, lol", etc...

@blanchonvincent
@nbochenko This test is not good. Your previous test is `$this->assertQueryContentContains('div#content', 'fo', self::CONTENT_CONTAINS_PARTIAL_MATCH);`, how can you have the same condition but a result different?