Mossbrook v1.1: Squashing bugs

New:

• Added controls to the main menu.
• Added a secret debug mode, so I don't have to worry about accidentally leaving any debugging tools lying around. Now they're always there!
• Added screenshots to the project page

Minor Bugfixes:

• When cleaning the spilled wine for the first time, the graphic now updates at the correct time instead of after the cutscene.
• Lily and Catherine had some issues with movement not updating correctly.
• Dialogue about spellbooks had some inconsistent colouring.
• Adjusted some music effect volumes