Added ROI check on the Mosaic operation
Moving WFSDataStoreFactory to org.geotools.data.wfs package.

- Also removed "Content" naming convention from DataStore, FeatureSource, and
FeatureStore classes.
Merge remote-tracking branch 'jdeolive/wfs-ng-pluggable' into feature-cascaded-stored-query

Conflicts:
	modules/unsupported/wfs-ng/src/main/java/org/geotools/data/wfs/impl/WFSDataStore.java
Continue with previous merge