google_website_optimizer 6.x-1.2

- Totally rewrote and fixed Admin interface's code. Made it using menu callbacks rather $op-dependent code.
- Fixed bug with <![CDATA[//> comments.
- Made updates to module's DB schema:
- Renamed it to google_website_optimizer (cause there's no reason in different name)
- Renamed tid to test_id to remove a confusion between taxonomy terms' tids.
- Made test_id type=serial
- Removed useless descriptions from schema
- Solved issue with access permissions.
- Implemented SimpleTests
- Created translation template and Russian translation.
- Minor code-style changes.