Added main menu

- Engine states (saving coming up next)
- Changed how the Grame Manager and main classes interact
- MainGrameClass interface tells the Grame Manager where the game code
is and provides information about the game
Some tweaks to the main menu
Grame 4.0: Saving/loading
Some more main menu work

- Added a delete save button to the load and save panels
- Added Mootilities as a dependency
Made the save/load lists prettier