SCHEMA-552. Kiji metatable should normalize table layout to use UIDs always.

 - Add TableLayoutUpdater.normalizeTableLayoutDesc() to provide more normalization options.
 - Updated HBaseKijiMetaTable/HBaseKijiTableLayoutDatabase to normalize to schema UIDs.
 - Kiji.createTable() and Kiji.modifyTableLayout() transitively apply normalization to UIDs.
 - Add support for raw-bytes cells in TableLayoutBuilder.

issue: https://jira.kiji.org/browse/SCHEMA-552
review: https://review.kiji.org/r/1113
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