Code cleanup
Log requestId and 4x4, and plumb them through to secondaries
Clean up curator config
Add metrics to query coordinator
CR: change 4x4 header to X-Socrata-Resource
More long line cleanup
Add metrics for size of datasetMap, datasetNopesMap
CR: variable rename
Merge pull request #15 from socrata/velvia/request-id-and-metrics

Add RequestID, 4x4 logging and metrics