Updated old user management routes to only be accessible with permission
to manage users, so also removed old content controls checking for that
permission.
- Moved preference views to more general "my-account" area.
- Started new layout for my-account with sidebar.
- Added MFA to prefeences view (to be moved).
- Moves guest user caching from User class to app container for
simplicity.
- Updates test to use simpler $this->users->guest() method for
consistency.
- Streamlined helpers to avoid function overlap for simplicity.
- Extracted user profile dropdown while doing changes.
- Adds filtering to the watched items list in notification preferences
so that deleted (recycle bin) items are removed via query.
- Adds relations and logic to properly remove watches upon user and
entity delete events, to old watches in database do not linger.
- Adds testing to cover the above.
Did not add migration for existing data, since patch will be close to
introduction, and lingering DB entries don't open a security concern,
just some potential confusion in specific potential scenarios.
Probably not work extra migration risk, although could add in future if
concerns/issues are found.
Related to #4499
Prevention of action on certain routes for guest user when public access
is enabled. Could not see a way this could be a security issue, beyond a
mild nuisance that'd only be visible if public users can edit, which
would present larger potential nuisance anyway.
- Added general user preferences view and updated link in profile menu
to suit.
- Made notification permission required for notification preferences
view, added test to cover.
- Adds option filtering and alternative text for page watch options.
- Adds "Watched & Ignored Items" list to user notification preferences
page to show existing watched items.
Ensures some sensible text is always in webhook text data.
Also aligned some notification reporting to use centralised activity
system instead of custom success events.
For #4216
