Merge branch 'master' of https://github.com/AHeise/sopremo-cleansing into repaired2

Conflicts:
	src/test/java/eu/stratosphere/sopremo/cleansing/mapping/ExampleMappingTest.java
	src/test/java/eu/stratosphere/sopremo/cleansing/mapping/GeneratedSchemaMappingFromCorrespondencesTest.java
first schema mapping tests with MappingTaskFactory.java

Conflicts:
	src/test/java/eu/stratosphere/sopremo/cleansing/mapping/GeneratedSchemaMappingFromCorrespondencesTest.java
	src/test/java/eu/stratosphere/sopremo/cleansing/mapping/GeneratedSchemaMappingFromTGDsTest.java