Provoke issue described in #164 in test.
Merge branch 'develop' into issue164-undefined_kind_in_entities
views for metadata fields
fixing missing tabbar-error
remove unnessecerily routes
Building further domain field properties
Merge branch 'staging' into issue164-undefined_kind_in_entities

Conflicts:
	test/unit/ontology_import_xml_test.rb
Merge branch 'staging' into issue164-undefined_kind_in_entities
category tree based search for ontologies
adding new routes for categories
Get entity name and kind from other entity with same text if undefined in hets XML output. Workaround for #164.
Handle PG::Error in the state_updater
Redundant error message removed
made method for get related ontologies for categories
ActiveRecord::StatementInvalid in the state_updater
Smaller invitation message for sign up.
Sign in/up links in navbar.
Merge branch 'visual_tweaks' into staging
Ensure ontology state is updated even on exceptions

related to #340
pry-byebug added