minor refactor
remove print commands
make device_users return only distinct usernames

also possibly improve performance insignificantly
Remove unused code
No longer filter only stock transactions
Change reporting rates calculations
remove feature flags for invoicing
prep celery invoicing task to run at 9 AM EST on the first of each month
Make it reporting/non-reporting only
remove as_test
Merge pull request #3048 from dimagi/remove-feature-flags

remove feature flags for invoicing
fix incorrect arg order
use SQLPillow
Merge pull request #3046 from dimagi/phonelog-device_users

make device_users return only distinct usernames
language change
Merge pull request #3053 from dimagi/cz

language change
Merge pull request #3050 from dimagi/print

remove print commands
Merge pull request #3039 from dimagi/app_resource

Minor improvement to application resource
Merge pull request #3052 from dimagi/sql-pillow

use SQLPillow
Merge pull request #3051 from dimagi/minor

minor refactor