Fixed serialization issue in SopremoTestUtil by using a separate SopremoKryo for class manager transferal
Refactored tests to extract a simple base that eases resource management
Added supported for unconnected data flows and fixed keys with function expressions

Fixed serialization for special keys
Reusing object in key deserialization
Cleanup
Added type node; Added header and type property to Csv format
More sophisticated insertion of dummy nodes for heterogeneous layouts
Added canonicalization of values for integration tests
Merge branch 'master' of https://github.com/AHeise/stratosphere-sopremo

Conflicts:
	sopremo/sopremo-common/src/main/java/eu/stratosphere/sopremo/io/CsvFormat.java
Merge branch 'master' of https://github.com/AHeise/stratosphere-sopremo