first version of aggregates
Merge branch 'develop' into feature/aggregate
Fixed BIND for aggregates to work
Fixed GROUP BY, HAVING in Aggregates
add union test query
Merge branch 'feature/aggregate' into feature/aggregates2

Conflicts:
	obdalib-core/src/main/java/it/unibz/krdb/obda/model/impl/OBDAVocabulary.java
	reformulation-core/src/main/java/it/unibz/krdb/obda/owlrefplatform/core/queryevaluation/SQLDialectAdapter.java
	reformulation-core/src/main/java/it/unibz/krdb/obda/owlrefplatform/core/sql/SQLGenerator.java
Aggregates save state
Aggregates save state
fixed error, stoped unfolder when there are aggregates
right translated program wrong unfolder
problem in the sql.. unfolder done
pullout equalities fixed for group
first implementation of group by in SQLGenerator
first aggregate working down to SQL. Assert is faling
added the right type to the aggregate
fixed the test
better tests!!!
comments
comments
Merge branch 'feature/leftjoin' into feature/aggregates2

Conflicts:
	reformulation-core/src/main/java/it/unibz/krdb/obda/owlrefplatform/core/sql/SQLGenerator.java