This fixes a regression of 0483ba58
where the classpath would start off with the application master's home
dir.

- always ship the lib folder
- properly setup the classpath from the supplied ship files
- cleanup deploy() method of YarnClusterDescriptor
- add test case

This closes #2187

This closes #2168

- lazily initialize ActorSystem
- make sure it is not created before job execution
- print connection information on the CLI

This closes #2189

- user specifies no parallelism
  -> parallelism is adjusted to #taskSlots * #nodes.

- user specifies parallelism but no #taskSlots or too few slots
  -> #taskSlots are set such that they meet the parallelism

-formatting
-don't use implicit conversions
-fixed ObjectName for mapped bufferpool

This closes #2146

This closes #2179

This closes #2185

Rename MessageFunction to ScatterFunction
and VertexUpdateFunction to GatherFunction.

Change the parameter order in
  Graph.runScatterGatherIteration(VertexUpdateFunction, MessagingFunction)
to
  Graph.runScatterGatherIteration(ScatterFunction, GatherFunction)

This closes #2184

Before, when snapshotting, we printed a log message about the file
input format not being checkpointable when the current split was
"null". Now, we only print the message when when appropriate.

This closes #2174

@PowerMockIgnore({"javax.management.*", "com.sun.jndi.*"}) was changed
to @PowerMockIgnore("javax.*"). This broke builds on Travis.

This closes #2175

Includes:
1. Scala examples for consumer and producer
2. Add information about AWS Kinesis service usage
3. Add Kinesis connecter to the fault tolerance guarantees table
4. Minor typo fix in Kafka documentation

This closes #2181

[FLINK-4080] Guarantee exactly-once for Kinesis consumer for failures in the middle of aggregated records

This closes #2180

The test case failed because it exceeded the deadline. Increasing the deadline and decreasing
the number of reelection should harden the test case.

This closes #2150.

This closes #1967

This closes #1671

This closes #2166

Guard test for ChainedAllReduceDriver

This closes #2156.

This closes #2160