Small improvements to usability and translations
Merge branch 'development' of
https://github.com/kata-csc/ckanext-kata.git into development

Conflicts:
	ckanext/kata/i18n/fi/LC_MESSAGES/ckan.mo
	ckanext/kata/i18n/fi/LC_MESSAGES/ckan.po
Clarify, that identification information is about data, not the metadata
Switched collections in navigation to add dataset, as this link was
requested by users and the collections don't work as we'd expect