Add docs for inviting, accepting and rejecting membership
Add docs for inviting, accepting and rejecting membership

itsyouonline/identityserver,mohabusama/identityserver,itsyouonline/identityserver,itsyouonline/identityserver,lucasvanhalst/identityserver,itsyouonline/identityserver,lucasvanhalst/identityserver,itsyouonline/identityserver,mohabusama/identityserver,mohabusama/identityserver,lucasvanhalst/identityserver,lucasvanhalst/identityserver,mohabusama/identityserver