Fix campaign and region columns in table
Fix campaign and region columns in table

- Create an index on region IDs for the selected regions that is
  available to the formatting closure used by the table
- Display the month and year of the start date for campaigns
- Remove the selectedValues function

SeedScientific/polio,unicef/rhizome,SeedScientific/polio,unicef/polio,unicef/rhizome,unicef/rhizome,unicef/polio,SeedScientific/polio,unicef/polio,SeedScientific/polio,unicef/rhizome,SeedScientific/polio,unicef/polio