#22 added configuration stetting and specification for list of strings (enum)
#22 added configuration value enum
#22 fd algorithm implements enum parameter algorithm
#22 added enum input
and added selected value field to configuration setting enum
#22 renamed enum -> listbox
#22 renamed setConfigurationValue -> set{Type}ConfigurationValue
in all {Type}ParameterAlgorithm
Merge branch 'master' into ConfigurationSpecificationEnum
#22 Added example_fd_algorithm to algorithms displayed in frontend.
#22 Made ConfigurationSpecificationListBox serializable in gwt.
#22 InputParameterWidget has access to configurationSpecification and its setting now.
The values of the list box can now be set by the algorithm.
Merge branch 'master' into ConfigurationSpecificationEnum
#22 Added tests for list box input in GwtTestParameter.
Merge branch 'master' into ConfigurationSpecificationEnum

Conflicts:
	backend/src/test/java/de/uni_potsdam/hpi/metanome/algorithm_execution/AlgorithmExecutorTest.java
	frontend/pom.xml
	frontend/src/main/java/de/uni_potsdam/hpi/metanome/Metanome_Dependencies.gwt.xml
	frontend/src/main/java/de/uni_potsdam/hpi/metanome/frontend/client/parameter/InputParameterWidget.java
	frontend/src/main/java/de/uni_potsdam/hpi/metanome/frontend/client/parameter/WidgetFactory.java
	frontend/src/test/java/de/uni_potsdam/hpi/metanome/frontend/client/parameter/GwtTestParameter.java
	testing_algorithms/example_ind_algorithm/src/main/java/de/uni_potsdam/hpi/metanome/example_ind_algorithm/ExampleAlgorithm.java
	testing_algorithms/example_ind_algorithm/src/test/java/de/uni_potsdam/hpi/metanome/example_ind_algorithm/ExampleAlgorithmTest.java
Merge pull request #108 from HPI-Information-Systems/ConfigurationSpecificationEnum

Implementaion of configuration specification enum (list box)