Spells

[phomm]

1. add Spells collection to Protobase response
   • enums for kind, target, and use (and they would be stored as ints in db, but strings in response), but spellId should be string in db
   • db tables
   • db layer model
   • bl model
   • mapper
   • task to fetch data
   • put some sample spells to db to test (unique entity)
2. warrior model upgrade to contain references
   • in DB model: string field for a comma-separated list (csv) of spell references
   • mapper would do automatic mapping for the csv
3. optional: put and compare unique spells collection to mapper and build/filter BL warrior's collection of spells strings/references