Merge branch 'ged-add-api-to-list-countries-and-subnational-regions' of https://github.com/gem/oq-platform into ged-add-api-to-list-countries-and-subnational-regions
add a loading indicator to the national and sub-national tables
fix the sub-national loading indicator
add help page link
remove the old exposure app and unused exposure functions
Remove old API of the exposure app, plus some cleanup and little refactoring
Merge branch 'ged-add-api-to-list-countries-and-subnational-regions' of https://github.com/gem/oq-platform into ged-add-api-to-list-countries-and-subnational-regions
resolve merge conflicts
Return a 404 response error if no currency and taxonomy name/version can be retrieved for the given sr_id and occupancy
Merge branch 'ged-add-api-to-list-countries-and-subnational-regions' of https://github.com/gem/oq-platform into ged-add-api-to-list-countries-and-subnational-regions
Merge branch 'ged-add-api-to-list-countries-and-subnational-regions' into exposure-export-UI-changes
Return empty 204 if sr_id and occupancy don't correspond to any study; in case currency is null, do not display the conversions tag
Merge branch 'ged-add-api-to-list-countries-and-subnational-regions' of https://github.com/gem/oq-platform into ged-add-api-to-list-countries-and-subnational-regions
Merge branch 'ged-add-api-to-list-countries-and-subnational-regions' into exposure-export-UI-changes
resolve merge conflicts
disallow the user to download non-res data when it`s not available for national data
disallow the user to download non-res data when it`s not available for sub-national data
change the has_nonres flag to be more human readable
fix the national reagion study dialog title
override the base.css block style to provide the national and sub-natioanl selection dialog with more compact style