K-Means WIP
SimpleDatasetBuilder - swap row/columns ArraList for LinkedHashMap for performance
SimpleDatasetBuilder -fix 'data not found' bug introduced by prev. commit
Tcga Presets (wip) - load from to db
Presets DB - loading and reading preset datasets from the database
Presets - tested performance with flat tables vs name-value-pairs table structure
Presets - prefetch whole row
Presets - using preconfigured JOOQ DS Context
Tcga Presets - testing database performance
Presets - use flate table structure to improve value retrieval performance
Presets - h2 performance degrades for large tables
Presets - added HSQL library
Presets loader for hsqldb
Presets - fix LifecycleUtilities to prevent 'closing' PresetValuesFlatTableIterable on application exit
Presets - added PresetValuesLoader to load some sample data in embedded moad
Presets - PresetsRestConfiguration.prefetchPresetRowKeys to its own thread to speed up server startup
Presets - fix TestTcgaPresetMetafile test to work on travis
Presets - added presets.persistense-prod.properties
Presets - setup prod database url for presets-db, cleanup java warnings.
Merge pull request #615 from apartensky/master

Presets - hsql db