Merge pull request #690 from jay-hodgson/release-21

simplify by using membershipStatus (which also fixes a bug around requesting)
Expect a 409, not a 401 in case the email is already taken
for stack-21, force account creation during OpenID authentication
Merge pull request #699 from jay-hodgson/release-21

for stack-21, force account creation during OpenID authentication
update governance pdfs
Merge pull request #700 from jay-hodgson/release-21

SWC-1045: update governance pdfs
Merge pull request #695 from kaysoky/400To401To409

Stack-21 - expect 409s
Merge branch 'release-21' into develop

Conflicts:
	pom.xml