Misc. refactorings for performance
Merge branch 'develop' into is_335

Conflicts:
	esup-opi-dao/src/main/java/org/esupportail/opi/dao/IndividuDaoService.java
	esup-opi-dao/src/main/java/org/esupportail/opi/dao/IndividuDaoServiceImpl.java
	esup-opi-domain-services/src/main/java/org/esupportail/opi/domain/DomainService.java
	esup-opi-domain-services/src/main/java/org/esupportail/opi/domain/DomainServiceImpl.java
	esup-opi-web-jsf-servlet/src/main/java/org/esupportail/opi/web/controllers/opinions/OpinionController.java
	esup-opi-web-jsf-servlet/src/main/java/org/esupportail/opi/web/controllers/opinions/PrintOpinionController.java
	esup-opi-web-jsf-servlet/src/main/java/org/esupportail/opi/web/controllers/opinions/ValidOpinionController.java
	esup-opi-web-jsf-servlet/src/main/webapp/WEB-INF/faces-config.xml
Enf of is_335 (gh #229 + gh #180 + misc. refactorings)