Implement Account Creation page

- Add generic StateButton class which allows the cretion of buttons
that have different opacity depending on their state
- Remove LoginButton and SubmitButton classes since they were redundant
and had exactly the same functionality. Use StateButton class now
- Remove all test accounts from the sop.sqlite3 make sure to delete
your database from the simulator folder. Located in your simulator
folder. (Example path: /Users/Oleg/Library/Application\ Support/iPhone\
Simulator/6.1/Applications/479933B2-8FFE-44C6-9BC8-269F9D3EB448/Document
s/sop.sqlite3)
- The MenuLayer will now ask to create a new account if no accounts are
present or play as guests. (To-Do disable statistics for guest accounts)
- Account creation page is still in the early stages and it's possible
that you might be able to SQL inject and use spaces as password. To-Do:
Implement ability to add pictures to an account
- Add manage account to administrator menu. To-Do: Fix the sprite
positioning.