Refactored common orm pattern to get district IDs for a plan. Fixed available_districts method to return correct count of districts.
Refactored common orm pattern to get district IDs for a plan. Fixed available_districts method to return correct count of districts.

JimCallahanOrlando/DistrictBuilder,JimCallahanOrlando/DistrictBuilder,JimCallahanOrlando/DistrictBuilder,JimCallahanOrlando/DistrictBuilder