Set MDC for X-Socrata-RequestId if we generate one
Merge pull request #10 from socrata/velvia/quick-requestid-fix

Set MDC for X-Socrata-RequestId if we generate one
Merge branch 'master' into 3.0.0

Conflicts:
	socrata-http-server/src/main/scala/com/socrata/http/server/util/RequestId.scala