Fixed tests in frontend.
Add ExecutionResource.
Finish Rest API for Executions.
Change begin and end to long in Execution and delete executions when delete an algorithm.
Add Rest API for results.
If you save or delete an execution all related results are going to be saved or deleted too.
Fixed some tests.
First steps in changing AlgorithmExecutionService to a restful service.
Add simple setter for settings in ConfigurationRequirements for JsonEncoderDecoder.
Merge branch 'FileInputRestService' into delete_algorithms

Conflicts:
	frontend/src/main/java/de/metanome/frontend/Metanome.gwt.xml
	frontend/src/main/webapp/WEB-INF/web.xml
	frontend/src/test/java/de/metanome/frontend/MetanomeTest.gwt.xml
Change chars to strings in ConfigurationSettingFileInput for serialization.
Some clean up.
Fix conflicting versions of Jersey and Jackson.
Use fasterxml jackson.
Add AlgorithmExecutionCache for caching the result and progress receiver.
Add type information for serialization to settings.
Add setter for column identifiers.
Add restful parameter service.
Add restful parameter service.
Merge branch 'delete_algorithms' of https://github.com/HPI-Information-Systems/Metanome into FileInputRestService + All inputs refactored