Merge remote-tracking branch 'upstream/master'

Conflicts:
	opal-gwt-client/src/main/java/org/obiba/opal/web/gwt/app/client/navigator/presenter/ValuesTablePresenter.java
	opal-gwt-client/src/main/java/org/obiba/opal/web/gwt/app/client/widgets/presenter/SummaryTabPresenter.java