Added history button. It is now visible in all tabs.
Commented out prevailing Metadata documents section. It shouldn't be
needed for now.
Modified add related item's form. Removed the image url, as it was very
misleading. Changed the url field, it is now more simplified.
Added maintainer to schema
Merge branch 'development' of https://github.com/kata-csc/ckanext-kata.git into development
Improvements to search, the search result's title is still bad.