added different ordering for documents
filter documents in event page
Merge branch 'documents-ordered-by-created-at' into develop
Removes datepicker init JS

No need as automatically performed on elements with datepicker class
Merge branch 'develop' into documents-filter-by-date

* develop:
  filter documents in event page
  added different ordering for documents

Conflicts:
	spec/controllers/admin/documents_controller_spec.rb