Display only countries, areas and resorts having at least one piste
everywhere but in "new piste" form.
unit tests fixing after "display having pistes only" evolution
Merge branch 'master' of https://github.com/ch4mpy/MBP into seolan

Conflicts:
	test/persistence/SeolanRepositoryTest.js
	www/js/persistence/SeolanRepository.js
	www/js/widget/MarkRangeWidget.js
Fix Conflict