oq-ui-client2/exposure_model_export.html:

Renamed to exposure_building_form.html.
oq-ui-api/geonode/exposure/views.py:

Renamd the building exposure export-related views.
oq-ui-api/geonode/exposure/views.py:

Added some missing underscores to the CSV header.
oq-ui-api/geonode/exposure/views.py:

Fixed a reference to a non-existent variable.
oq-ui-api/geonode/exposure/views.py:

Stubbed out the population exposure export views.
oq-ui-api/geonode/exposure/urls.py:

Cleaned up and added to url routing for the new exposure export views.
oq-ui-api/geonode/exposure/tests.py:

Updated tests per some renamed functions in views.py.