idgames_db_dump: set view attributes before calling write_stats()

- Reworded the output of successful/unsuccessful API requests and
  parses
Keysum: issue #118; did a base36 conversion shootout for keysum
Views/CLI/idGamesDbDump: added program_time_value_diff attribute
idGamesFile: remove Math::Base36 module

- Using `Math::Base36` is only needed in Roles/Keysum now