Added license for visualizations from mbostock.
#134 Added inputs fields for the input configuration page.
Merge branch 'master' into add-inputs-to-db

Conflicts:
	backend/src/main/java/de/uni_potsdam/hpi/metanome/results_db/DatabaseConnection.java
	backend/src/test/java/de/uni_potsdam/hpi/metanome/results_db/DatabaseConnectionTest.java
	frontend/src/main/java/de/uni_potsdam/hpi/metanome/frontend/client/parameter/ListBoxInput.java
#134 Added missing tests and java docs.
improved ConfigurationSpecificationBooleanTest.java
#159 added Override annotation
improved docs
#158, #157, #23 implemented ConfigurationSpecificationRelationalInput.java
#134 Implemented DatabaseConnectionService to get database connection from db. BUT: Does not work yet.
Merge branch 'master' into add-inputs-to-db
change module name to MetanomeTest to avoid css errors
#134 Fixed bug: Added GwtIncompatible signature to DatabaseConnection methods.
#134 Added Services for FileInput and TableInput.
#134 Made FileInput, TableInput and DatabaseConnection Serializable.
#134 Added new service to gwt.xml and web.xml files.
#134 Updated TestHelper: List all TableInputs, FileInputs, DatabaseConnections.
#134 Implemented saving of input.
#134 Added info label if input successfully stored and fixed some minor things when saving inputs.
Merge branch 'master' into add-inputs-to-db
#134 Updated TableInputField test.