[maven-release-plugin] prepare for next development iteration
Merge branch 'release-1.1.0' into develop
BREAKING CHANGES in ParserTestCommon and AstPrinterInterface

- Pulled up functionality from ParserTestCommon into inheriting classes (in other projects)
- Renamed AstPrinterInterface to GenericPrinterInterface, which now works with Objects instead of AstNode
Minor fix in AstPrinter to properly print StringContentNode with additional attributes
Deprecated ParserTestResources and ParserTestCommon, use FileCompare and TestResourcesFixture instead
Implemented EntityMap.toString() method
Made EntityMap implement Serializable
AstPrinter: The caller has to close the stream!
Merge branch 'develop' into google
Retired ptk-profiler
Replaced ParserTestCommon with IntegrationTestBase and improved documentation in ParserTestResources
Merge branch 'develop' into google

Conflicts:
	ptk-common/src/main/java/de/fau/cs/osr/ptk/common/test/ParserTestCommon.java
	ptk-common/src/main/java/de/fau/cs/osr/ptk/common/test/ParserTestResources.java
	ptk-profiler/src/main/java/de/fau/cs/osr/ptk/profiler/ParseAndPrintTest.java
	ptk-profiler/src/main/java/de/fau/cs/osr/ptk/profiler/ParserSpeedTest.java
Removing maven reports that will be provided by sonar in the future
ParserInterface and IntegrationTestBase now work with Object as parser result instaed of AstNode
Fixed case where AstPrinter would crash due to null child.
Pulled out visitor logic from VisitorBase to VisitorLogic
AstNode now extends AbstractList instead of extending List and not implementing its methods (which led to problems in Eclipse Debugging for example)
Removed obsolete methods from ParserEntity
Added RtData class
Introduced AstNodeInterface interface and completed clone functionality in AstNode

Also removed obsolete code