deprecate get/set_shared_data API Session or transaction data must be used instead. We must forward .transaction_data to web/request from which it was missing (this is indeed a _cw object API). Closes #3799036.

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