contrib-5494 - Added administration links to gradelogs and testclient: backwards compatibility adjustements.
contrib-5502 Automated tests - Backwards compatibility: testing_block_generator class does not exist pre-2.5.
contrib-5503 Unit tests - Add test-case fixtures to the gradebookservice tests.
contrib-5504 Unit tests - Get user info test adjustments.
contrib-5505 Web services - (WIP) Add webservice get_grade which checks if a spcified grade (or item) exists.
Code cleanup.
Version update.