Merge pull request #21 from kkasravi/master

Single application OryxApplication will load JAX-RS resources using a ty...
Fetch all Item IDs
Merge pull request #22 from smarthi/suneel

Fetch all Item IDs
Resolve minor issues from last commits
make CI build faster
Merge pull request #23 from PeterDaveHello/patch-1

make CI build faster
JAX-RS WS 2.0.1
Factor out vetor operation to common
Additional unit tests
REST endpoints, commiting code for /estimate
Merge pull request #28 from smarthi/master

REST endpoints, commiting code for /estimate
Expose current integration test problem -- Application doesn't init in Serving Layer?
Add serialize/deserialize Config to/from String for use in web app situations
Issue #24 : get OryxApplication and listener to load at startup, and, get around compile-time dependency on Jersey
Improve HyperParam test reliability with shorter window and checking first model built
Fix javadoc 8 errors
Improve management of Spark servlet dep by excluding it from serving
Factor out transposeTimesSelf and promote HPPC to common
Move linear system solver to common and add serving layer YTY solver
Slightly push 'estimate' logic back to Estimate endpoint from model