Merge branch 'release/v2.11.5' into develop
fix long loading on subscriber edit page
proctect short calls
fix Phonebook/DNC delete on frontend UI
update d3 reference in templates
update doc on API
fix call report search criteria
change indent
fix pep
fix i18n on campaign status
Update PO/MO files
Update version v2.11.6
Merge branch 'release/v2.11.6'