def map_layout
append_content_security_policy_directives(
:child_src => %w[http://127.0.0.1:8111],
+ :frame_src => %w[http://127.0.0.1:8111],
:connect_src => %w[nominatim.openstreetmap.org overpass-api.de router.project-osrm.org],
:form_action => %w[render.openstreetmap.org],
:script_src => %w[graphhopper.com open.mapquestapi.com],