reformat
use sofabed data for call center form stats
refactor mappings for easier reuse
add callcenter tests
adjust dates to include current date
remove form data mapping
extract get_call_center_domains utility function
add cleanup managment command
add test case for custom domain data
handle missing ES index
fix case of custom indicator names
Merge branch 'master' into formsql
Merge branch 'master' into formsql
Merge pull request #3794 from dimagi/formsql

use sofabed data for call center form stats