[server/session] do not clear session.cnx if unrelated to cnx actually cleared The cnx parameter may be different from the one actually loaded for the current thread. This will be possible in future commit when you close a client connection for example.

addressbook
basket
blog
book
calendar
comment
company
email
file
folder
i18ncontent
keyword
link
mailinglist
person
tag
timeseries
vcsfile