kiji-schema: SCHEMA-775. Refactor KijiColumnNameTranslator/HBaseColumnName/LayoutCapsule

issue: https://jira.kiji.org/browse/SCHEMA-775
review: https://review.kiji.org/r/1900
commit: https://github.com/kijiproject/kiji-schema/commit/5190de2b5737ab4f13bde376c30682add88e4c74
kiji-mapreduce: 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']
commit: https://github.com/kijiproject/kiji-mapreduce/commit/40781ab741770a763f6a0927114125eb55f5d7da