Fix zipkin-web's timezone problem

Zipkin-web has problem that browser's timezone is not dealt with correctly.
To fix it, "end time" should be passed as timestamp.

Author: @synk
Fixes #370
URL: https://github.com/twitter/zipkin/pull/370
fix query extractor test
zipkin-hbase scans backwards

Since row keys for a particular service start at Long.MAX_VALUE at the epoch and
grow towards 0 as time progresses, starting at 0 and scanning until a reversed
timestamp actually finds traces after the specified date, and not before.

Author: @sethp-jive
Fixes #369
URL: https://github.com/twitter/zipkin/pull/369
Oss sync

This syncs the internal view to the OSS view.

Author: @sprsquish
Fixes #372
URL: https://github.com/twitter/zipkin/pull/372