SCHEMA-775. Refactor KijiColumnNameTranslator/HBaseColumnName/LayoutCapsule

issue: https://jira.kiji.org/browse/SCHEMA-775
review: https://review.kiji.org/r/1932
over-the-shoulder-reviewers: ['ajprax']
Update versions for release
[maven-release-plugin] prepare release kiji-mapreduce-root-1.2.9
[maven-release-plugin] prepare for next development iteration
KIJIMR-285. Eliminate Maven build profile for KijiMR profiling, replaced by a traditional Maven module.

issue: https://jira.kiji.org/browse/KIJIMR-285
review: https://review.kiji.org/r/1924