[IMP] mail: add moderation on channels

Purpose of this commit is to allow moderation on incoming messages in
discussion channels. On some channels on which moderation is required
messages should be in a pending moderation stage. Moderators can accept
or refuse messages as well as always allow or ban messages coming from
a given set of emails.

Channels now have an option to be moderated. Moderators can be added on
channels. They have access to a specific UI in Discuss to see and take
action on messages waiting for moderation.

Concerning mail.thread message that are pending moderation are not notified.
It means nobody receives a notification about them. Moderation process calls
the notification once the message is validated.

Various features included in this commit :

 * a model is added to store the decision about emails, allow or ban;
 * access rights are updated so that only moderators can modify moderation
   fields on message;
 * specific bus notifications are send to moderated people as well as to
   moderators on incoming emails as well as when a decision is taken;
 * options are added on channels to send explanations to moderated emails;
 * options are added on channels to write and send guidelines explaining
   why and how moderation is performed;
 * a reminder is send daily to moderators with remaining messages to moderate;
 * discuss UI is adapted and a new channel is added below Inbox and Starred
   giving access to moderation tools;
 * chanenl UI is adapted allowing to moderate directly inside channels;

This commit is linked to task ID 29521. Closes #21921.

1 files changed, 1 insertions, 0 deletions

diff --git a/addons/mail/security/ir.model.access.csv b/addons/mail/security/ir.model.access.csv
index c9bf2e909ec..85c2e6d4ded 100644
--- a/addons/mail/security/ir.model.access.csv
+++ b/addons/mail/security/ir.model.access.csv
@@ -18,6 +18,7 @@ access_mail_channel_user,mail.group.user,model_mail_channel,base.group_user,1,1,
 access_mail_channel_partner_public,mail.channel.partner.public,model_mail_channel_partner,base.group_public,1,0,0,0

 access_mail_channel_partner_portal,mail.channel.partner.portal,model_mail_channel_partner,base.group_portal,1,1,1,1

 access mail_channel_partner_user,mail.channel.partner.user,model_mail_channel_partner,base.group_user,1,1,1,1

+access_mail_moderation_user,mail.moderation.user,model_mail_moderation,base.group_user,1,1,1,1

 access_mail_alias_all,mail.alias.all,model_mail_alias,,1,0,0,0

 access_mail_alias_user,mail.alias.user,model_mail_alias,base.group_user,1,1,1,1

 access_mail_alias_system,mail.alias.system,model_mail_alias,base.group_system,1,1,1,1