Cosmetics.
display UrlMap action buttons on repository write

If someone has write access on the repository he/she
can edit/add UrlMaps.
Only show user for recently updated ontologies on home#show, if it is present. Fixes #464.
Merge pull request #551 from ontohub/550-adjust_accessrights_for_url_maps

display UrlMap action buttons on repository write
Merge branch 'staging' into 249-display_symbols_as_dag

Conflicts:
	app/models/ontology/entities.rb