Polling for jobmanager webinterface
Fix bug in scala cogroup.flatMap

Did fail with null pointer exception when one of the inputs is empty.
Set LocalExecutor logging to INFO; print runtime. reduce logging verbosity of IPC server
implemented jdbcoutputformat
moved jdbc into new project, adjusted for 0.5

Conflicts:
	stratosphere-addons/jdbc/pom.xml
	stratosphere-addons/jdbc/src/main/java/eu/stratosphere/api/io/jdbc/JDBCInputFormat.java
	stratosphere-addons/jdbc/src/test/java/eu/stratosphere/api/io/jdbc/JDBCInputFormatTest.java
Conflicts handled by @rmetzger
renamed jdbc package properly to the new 0.4 naming conventions
added batch interval to jdbc; fixed issue with jdbc test cases
Polling for jobmanager webinterface
Paths in windows scripts enclosed in double quotes
Merge branch 'webinterface_autoupdate_newrelease-pr' of https://github.com/markus-h/stratosphere into webfix
Reenable ClosureCleaner and add new Test case for everything

Closure cleaner did not work before because the user code class loader
was not used when it was trying to load inner anonymous classes.

The new test checks whether the ClosureCleaner works together with the
user code class loader.

It also used the local distributed executor and remote executor.