Add odnoklassniki resource owner

Hi! This is refactored pull request with Odnoklassniki resource owner.
I have took your wishes, and separate previous PR.
So its working version of code.
Here https://gist.github.com/spolischook/5102874 official php simple example code from http://dev.odnoklassniki.ru/wiki/download/attachments/12878032/odnoklassniki.php?version=1&modificationDate=1319438428123 where you can see that application_key is required, and it different at each application unlike foursquare where version parameter is hardcore.
Thank you all for the comments of the previous PR - https://github.com/hwi/HWIOAuthBundle/pull/200