Add explicit jets3t dependency, which is excluded in hadoop-client
Update Python API features
Fix HDFS access bug with assembly build.

Due to this change in HDFS:
https://issues.apache.org/jira/browse/HADOOP-7549

there is a bug when using the new assembly builds. The symptom is that any HDFS access
results in an exception saying "No filesystem for scheme 'hdfs'". This adds a merge
strategy in the assembly build which fixes the problem.
fix run-example script
Merge pull request #921 from pwendell/master

Fix HDFS access bug with assembly build.
better expression
Merge pull request #923 from haoyuan/master

fix run-example script
SPARK-894 - Not all WebUI fields delivered VIA JSON
Merge pull request #925 from davidmccauley/master

SPARK-894 - Not all WebUI fields delivered VIA JSON
Change port from 3030 to 4040
Merge pull request #922 from pwendell/port-change

Change default port number from 3030 to 4030.
Merge pull request #919 from mateiz/jets3t

Add explicit jets3t dependency, which is excluded in hadoop-client
Merge branch 'master' into branch-0.8