add configuration for clustering
Merge remote-tracking branch 'origin/feature-text-mining' into develop

Conflicts:
	config/src/main/java/nl/knaw/dans/ersi/config/CanopyConfig.java
	config/src/main/java/nl/knaw/dans/ersi/config/ClusterAlgorithmConfig.java
	config/src/main/java/nl/knaw/dans/ersi/config/ConfigurationCreator.java
	text-mining/src/main/java/nl/knaw/dans/ersy/textmining/clustering/KMeansWithCanopyClustering.java
adding dependency to orm