Worked on Webapp interpreter.

Have now managed to play a game on the webengine of google.
What to do tomorrow:
- Deal with actions: passive actions, visible/invisible, being able to
enable/disable actions.
- Handle effects if true and effects if false (currently the editor only
creates effects if true).
- Add additional effects.
- Use Google users and store their moves in the game (in a database).
Then on each action, simply replay all the actions they have done so
far.