added config for prices
Added subtractCredits method for Wallet model
Set database migration to safe
Added subtractCredits policy
Merge branch 'master' of github.com:Islive-io/fortress into feature/subtract-credits
Updated prices.
Removed unneeded parseInt
Removed unused argument definition
Apply subtractCredits to routes
Safer argument checks
Removed unneeded conditional
Merge pull request #38 from RWOverdijk/feature/subtract-credits

Feature/subtract credits