Update application sorting policies to consider priority

The application sorting policies need to be updated to consider priority:

• fair
  • application.sort.priority = enabled
    • Sort by priority, and then using existing FAIR algorithm
  • application.sort.priority = disabled
    • Use priority as last sort key (tiebreaker)
• fifo
  • application.sort.priority = enabled
    • Sort by priority, and then using existing FIFO algorithm.
  • application.sort.priority = disabled
    • Use priority as last sort key (tiebreaker)
• stateaware
  • application.sort.priority = enabled
    • Sort by priority first, and then using existing algorithm.
    • Exception: If an app is already in an accepted state, no other apps will be considered.
  • application.sort.priority = disabled
    • Use priority as last sort key (tiebreaker)