[DEV-0004] Added wages, minor changes

0.0.4
  NEW
    - Added WAGES class
    INCOME
      - added hourly income to be added
    WAGES
      - Set wages value
      - Set if it is Annual or Hourly, more to come, but currently its
just that
  CHANGES
    MAIN
      - allowed for statistics without budgets
    STATISTICS
      - Encapsulated Budgeting statistics so that budgets will not be
calculated
        when there is nothing in budgets (prevents null exception)