strip vellum:ignore attributes just in time
minor style fixes
Merge branch 'master' into strip-ignore-retain
strip all vellum:* attributes from forms on build
minor cleanup of strip_vellum_ns_attributes
replace synclog with case_sync_op
make case_sync_op and last_sync optional
Merge branch 'master' into cc_fix
remove type and hq_user_id from CaseState
update staging.yaml

[ci skip]
fix typo
Merge pull request #4806 from dimagi/docs

fix typo
Merge pull request #4787 from dimagi/strip-ignore-retain

Strip ignore retain
Merge pull request #4804 from dimagi/cc_fix

replace synclog with case_sync_op
Merge branch 'master' into double-management+case-detail-tabs

Conflicts:
	corehq/apps/app_manager/tests/test_form_preparation_v2.py