Fix for urls, when a content is responded in JSON format.

[andreymoskvenkov]

No description provided.

[gordonknoppe]

Hi @andreymoskvenkov, thanks for the pull request.

Can you share an example of the problem this is trying to fix? Is this for cases where there are json encoded url strings within an HTML formatted body of a response with text/html content-type? Or for parsing JSON responses such as an AJAX controller.

[andreymoskvenkov]

Oh man....noo....
The problem occurs, when some controller's action sets into response body the json encoded string and no matter what content type will be set into the response objetct (text/html or text/json or something else). Another words the test case is the following:

1. a customer runs some Ajax action from some page (for example, loading page 2 on a category page).
2. The Ajax request is being processed by a controller's action method
3. A controller's action sets into the Response's body a JSON encoded string like:
   $this->getResponse()->setBody(json_encode($result));
4. Ajax callback method processes it and gets image URLs (if such URLs are present in the response JSON object somewhere) without appended version numbers.

My fix fixes all cases, when a response body is a JSON text.