Add simplified inventory report

Can currently only be filtered by location and program
Add date filter (but functionality is not implemented yet)
Enable date filtering for report
Limit simplified inventory report to 100 locations
Merge branch 'master' into simplified-reporting
Fix lambda syntax
Merge branch 'master' into simplified-reporting
Text changes
Fix default date
Show more useful string than 'None' if there is no data
Reorder reports
Merge pull request #4722 from dimagi/simplified-reporting

Simplified reporting