add plone.app.contenttypes-compatability for select and tagcloud
Fix: for consistency with select widget, radio and checkbox widgets
are not displayed if vocabulary is empty.
Allow DateRecurringIndex (start and end-date of events provided by
plone.app.contenttypes with plone.app.event) for sorting.
Merge pull request #13 from tdesvenain/master

radio and checkbox widgets are not displayed if vocabulary is empty
append result-count to label instead of li
fix jslint-warnings
avoid double computing of self.default in selected
easier to read
more readability
Fix CONTRIBUTING.md
Merge branch 'master' of https://github.com/collective/eea.facetednavigation
Merge pull request #40 from gotcha/master

Some readability
Add change note
Merge pull request #14 from starzel/fix_41

Fix for issue #41
Widget css class is an attribute of widget object,
to make it more easy to override.
fallback css_class
Merge pull request #15 from tdesvenain/master

Widget css class is an attribute of widget object,
Make it possible to reset the date filter by manually deleting
the start/end fields.
Use UK date format (hardcoded for now, as it was before)