Updated Twitter test suite

- Synced from ZendService_Twitter repo
Synced Twitter with ZendService_Twitter

- Removed Twitter_Search; no longer relevant with v1.1 API
- Added Twitter_Response, as we're no longer using Zend_Rest_Client
- Updated Twitter to sync with standalone repo and use v1.1 API
Fixes made due to tests

- Removed "namespace" directive
- Removed "\" namespace qualifier in test
- Fixed class name typos
- Fixed HTTP cookie jar usage to work with ZF v1 API
Revised twitter documentation

- Revised to cover changes introduced in refactoring to v1.1 API
Fix ZF-12532: Zend_Service_SlideShare: API endpoint change
Fix ZF-12228: Zend_Service_WindowsAzure requires non existing files