Allow custom user deck sets

[DCxDemo]

Original game is hardcoded to have 10 boards per skater profile.
It is possible to solve it in 2 ways:

1. the hard way - implement exrernal loading lists (custom qb to add to existing array? json?)
2. the easy way - add more pages the original way, but make sure all missing profile decks are unlocked by default, instead of locked. if profile name is missing, only 1st deck of the set is unlocked and there are no ways to unlock them.