Feature/olcoins

[MartinSkatvedt]

Still a W.I.P, but the main functionality is there.

TODO:

• Make the button to add more ølcoins more visible (as it is currently the beer)
• Error-handling
• Implement a method to purchase with both currencies at the same time, even though one of them throws an error. (This is sort of linked to error-handling)
• Give some sort of message when creating the user for the first time
• General code-cleanup, and port to new structure