Use applications tags

[oharsta]

See OpenConext/OpenConext-access#92

• Use the new application_tags in IdP dashboard for the facet search instead of coin:ss:type_of_service:en and coin:ss:type_of_service:nl
• After the deployment of the IdP-dashboard release which uses the new application_tags, write a cleanup migration in Manage to remove the deprecated coin:ss:type_of_service:en and coin:ss:type_of_service:nl