Game: Fix molecule definition.

git-tfs-id: [https://tfs.codeplex.com:443/tfs/TFS15]$/Atomix;C39459
Editor: Separate helper classes to own files.

git-tfs-id: [https://tfs.codeplex.com:443/tfs/TFS15]$/Atomix;C39460
Editor: Simple resizing of the board.

git-tfs-id: [https://tfs.codeplex.com:443/tfs/TFS15]$/Atomix;C39461
Editor: Saving resized tile into level.

git-tfs-id: [https://tfs.codeplex.com:443/tfs/TFS15]$/Atomix;C39462
Logic: Show empty tile in molecule tab too.

git-tfs-id: [https://tfs.codeplex.com:443/tfs/TFS15]$/Atomix;C39463
Editor: Create custom control for displaying board.

git-tfs-id: [https://tfs.codeplex.com:443/tfs/TFS15]$/Atomix;C39464