SCORE-122. KijiFreshnessManager and InternalFreshKijiTableReader should check the record version of retrieved Freshener records to ensure correct behavior.

issue: https://jira.kiji.org/browse/SCORE-122
review: https://review.kiji.org/r/1561
SCORE-147. Add a KijiMapReduceJobBuilder implementation for running a ScoreFunction in batch.

issue: https://jira.kiji.org/browse/SCORE-147
review: https://review.kiji.org/r/1559
SCORE-144. Integrate and validate ColumnReaderSpec behavior in scoring

issue: https://jira.kiji.org/browse/SCORE-144