Documentation: Added Aurora to the frameworks list.

Aurora is awesome, it should be added to the docs for mesos
frameworks. The list is now alphabetical as well.

From: Jeffrey Schroeder <jeffschroeder@computer.org>
Review: https://reviews.apache.org/r/17101
Updates links to configuration doc, and fixes link to high availability doc.
Adds Shopify to list of companies 'Powered by Mesos'.
Added another argument to strings::format.

Review: https://reviews.apache.org/r/16855
Removed the deprecated monitoring statistics.

Review: https://reviews.apache.org/r/12765
Reverted metering from Statistics.

Review: https://reviews.apache.org/r/12766
Added a List type in stout.

Review: https://reviews.apache.org/r/17029
Exposed TimeSeries and added "sparsification" of older values.

Review: https://reviews.apache.org/r/13603
Refactored the ResourceMonitor to use TimeSeries directly instead of Statistics.

Review: https://reviews.apache.org/r/13604
Updated the monitoring endpoint to return instantaneous values.

Review: https://reviews.apache.org/r/13605
Added a Top abstraction to the webui.

This allows the webui to asynchronously update resource consumption
information without every Slave controller having to implement this.

Review: https://reviews.apache.org/r/13606
Fixed a flaky TimeSeries test and improved the test diagnostics.

Turns out this test ran quick enough that Clock::now() was returning
the same values across multiple insertions.

Updated the list equality checks to show the expected vs. actual
results.
Added a logging message in log recover process.

From: Jie Yu <yujie.jay@gmail.com>
Review: https://reviews.apache.org/r/17202
Added a test that verifies a non-voting replica does not reply to
promise/write requests.

From: Jie Yu <yujie.jay@gmail.com>
Review: https://reviews.apache.org/r/17203
Removed --without-curl from libprocess configuration.

From: Timothy St. Clair <tstclair@redhat.com>
Review: https://reviews.apache.org/r/17130
Fixed MESOS-935: Group should tell MasterDetector "no memberships
detected" when it locally times out.

From: Jiang Yan Xu <yan@jxu.me>
Review: https://reviews.apache.org/r/17156
Improved Group to take label as an option.

Review: https://reviews.apache.org/r/17171
Updated detector to understand old (unlabelled) and new (labelled)
master znode formats.

Review: https://reviews.apache.org/r/17172
Updated master and contender to write znode(s) in the new (labelled)
format.

Review: https://reviews.apache.org/r/17173
Updated upgrades.md for 0.15.0 -> 0.16.0.

From: Jiang Yan Xu <yan@jxu.me>
Review: https://reviews.apache.org/r/17216