EXP-72. Disables kiji-schema's schema validation.

Reviewed by: kiyan
EXP-46. (P1) Define a DDL extension for running the model lifecycle.

This commit updates the project to include a KijiSchema DDL Shell
language extension capable of parsing statements to run model lifecycle
phases. A command for executing the model lifecycle, a parser plugin,
and a parser plugin factory are all defined.

Reviewed by: robertchu
EXP-67. Add support for Kiji kvstores in extractors and scorers.

issue: https://jira.kiji.org/browse/EXP-67
review: https://review.kiji.org/r/604
Initial work on writing to map-type CFs.

Splits ColumnFamily into ColumnFamilyInput and ColumnFamilyOutput.
Compiles; old tests pass.
no new tests yet.
Starting to write tests.
Wrote a KijiSourceSuite test
Wrote a KijiSourceSuite test
Changed it to re-merge ColumnFamily
local test passes, hadoop test doesn't.
add the 'finish' call to the job test