Merge pull request #223 from rxin/transient

Mark partitioner, name, and generator field in RDD as @transient.

As part of the effort to reduce serialized task size.
(cherry picked from commit d6e5473872f405a6f4e466705e33cf893af915c1)

Signed-off-by: Patrick Wendell <pwendell@gmail.com>
Merge pull request #227 from pwendell/master

Fix small bug in web UI and minor clean-up.

There was a bug where sorting order didn't work correctly for write time metrics.

I also cleaned up some earlier code that fixed the same issue for read and
write bytes.
(cherry picked from commit 182f9baeed8e4cc62ca14ae04413394477a7ccfb)

Signed-off-by: Patrick Wendell <pwendell@gmail.com>
Change log for release 0.8.1-incubating
[maven-release-plugin] prepare release spark-parent-0.8.1-incubating
[maven-release-plugin] prepare for next development iteration