With the Guest registration calling policyactions.js the [data-action="view"]
was having two click handlers set on the inital policy modal trgger.
With this commit we state what we want the click event to be set on.
This adds support for optional policies to the user acceptance reports.
Distinguished are "Pending" acceptances (we did not hear yet) from
"Declined" (user did not agree). The status workflow updated to support
new transitions: pending -> declined and declined -> accepted.
The patch adds a new column to the database table to hold the
information if giving agreement to the policy is compulsory or optional.
The flag can be defined via the policy editing form and is displayed at
the policies management screen.
The last modified time merged with the version column at the policies
management screen to save a bit of horizontal space - needed as we
display more information now at the first column.
The patch introduces a new property of a policy document called
"Agreement style". It allows the admin to define if the policy should be
accepted together with all others on the consent page (legacy and
default behaviour) or on its page before the consent page is reached
(the new optional behaviour).
The policies can be revoked by clicking the "Agreed [on behalf]" ticks.
A message has been added also to explain users they must contact to
the DPO if they want to withdraw their consent to policies.
