SURES-13 Update hibernate reference
SURES-13 Update sessionfactory for hibernate4 migration
SURES-13 change reference for second level cache, change deprecated dtd hibernate namespace
SURES-13 Update Hibernate Session Factory
SURES-13 revert show_sql
Merge branch 'SURES-13' of surplus01.private.cineca.it:/production/SUR/ES into SURES-13

Conflicts:
	api/src/main/java/org/dspace/app/cris/util/Researcher.java
Added unique constraint for source attributes
Added support for source reference in nested object
Removed c2p0 hibernate configuration
Merge conflict
SURES-13 remove dependency to hibernate c3p0 wrapper
SURES-13 change lob to type hibernate string
Added sourcereference initialization
Add lazy initialization for source reference
SURES-13 Change HIbernate eventListeners initialization
Merge with hibernate 4 migration
Add license, modified version ccommons dependency
Merge branch 'SURES-13' of surplus01.private.cineca.it:/production/SUR/surplus-es into master-vs-sures13
Removed autowired annotation
Merged with community