Improved views - it is now clear what is a data source with views. Views can...

Improved views - it is now clear what is a data source with views. Views can now be queried directly with a query evaluator or via a collection of queryable data. Views can be used in the chase via the creation of an instance of a ChasableData that can contain read-only data. AtomicFOQueryEvaluator was a bit optimized to have a more efficient filter of atoms. The equals method of terms that are built through the SameObjectTermFactory was corrected: now, it will do a reference comparison if the other object was built through the factory or call the equals the method of the other object if it is not an object from the factory.