Changed the code in base.js for supporting the and-or logic in required blocks.
Updated Kare's data file (levels.js) to associate with the new required block standard.
Updated Turtle's data file (levels.js) to associate with the new required block standard.
Updated Maze's data file (levels.js) to associate with the new required block standard.
Merge pull request #68 from nanan9177/and_or_block_test

Added And or block test in Required Blocks