case study can be associated to world location and orgs
WIP

need to add partial for single entiy/or just refactor

Conflicts:
	app/views/admin/editions/_worldwide_priority_fields.html.erb
fix admin list page for worldwide priorities
include the tests on case studies

should_allow_association_with_worldwide_organisations
should_allow_association_between_world_locations_and

Conflicts:
	test/functional/admin/case_studies_controller_test.rb
Test should_allow_association_with_worldwide_priorities

Conflicts:
	test/functional/admin/case_studies_controller_test.rb
fix admin link to related worldwide_priority
Display case studies under a priority

nb: styles on the list are inherited from mainstream which should be
fix soon

Conflicts:
	app/models/worldwide_priority.rb
	app/views/worldwide_priorities/show.html.erb
fix parital
fix association name after rebase