changes related to commit c61b4f2edfe48369a9699a790701f313ad78b148 AsyncDrillableFilter
remove reports.fields.DatespanField and use reports.filters.dates.DatespanFilter instead
remove reports.fields.DatespanField and use reports.filters.dates.DatespanFilter instead, see commit 9b2d36b87b368a0d9bd8314d88a2ba30e7fde5f0
removed ReportSelect field, use BaseSingleOptionFilter instead, see b2d68497f121b96466af8f31e27d26d4c8393b97
removed ReportSelect field, use BaseSingleOptionFilter instead, see b2d68497f121b96466af8f31e27d26d4c8393b97
- FilterUsersField is now UserTypeFilter in reports.filters.users
- changed all references in reports from FilterUsersField to UserTypeFilter
- moved templates around for UserTypeFilter and SelectMobileWorkerField into reports/filters
- see commit c5f8fdc6734a25d8e4c413768847db66dd524f2b
- SelectMobileWorkerFilter in reports.filters.users instead of SelectMobileWorkerField
- updates all references
- see 166483c8f4fa4984282fe6ac64aa811a1fe410b9
Merge remote-tracking branch 'hq-pact/corehq-report-field-cleanup' into fields-to-filters

Conflicts:
	custom/_legacy/pact/pact/views.py
	custom/_legacy/pact/reports/chw.py
	custom/_legacy/pact/reports/dot.py
Subtree merge
Merge remote-tracking branch 'psi-reports/corehq-report-field-cleanup' into fields-to-filters

Conflicts:
	custom/_legacy/psi/psi/reports/sql_reports.py
Convert DatespanField to DatespanFilter
SelectMobileWorkerField to SelectMobileWorkerFilter
SelectOpenCloseField to SelectOpenCloseFilter
AsyncDrillableField to AsyncDrillableFilter
GroupField to GroupFilter
Move fields to dont_use directory
Move everything to deprecated fields
Move devicelog stuff back
AsyncLocationField to AsyncLocationFilter
FilterUsersField to UserTypeFilter