avatar: Make avatars more of a utility (with settings)

Reviewed-By: Peter Rotich <peter@osticket.com>

Add restrictions to ticket/task closure

Reviewed-By: Jared Hancock <jared@osticket.com>

Implement generic get dynamic fields lookup routines

agent: Add missing perm for view all agents' stats

Reviewed-By: Peter Rotich <peter@osticket.com>

Fix incorrect usage of department members for alerts

Reviewed-By: Peter Rotich <peter@osticket.com>

dept: Fix incorrect SQL removing a department

Reviewed-By: Peter Rotich <peter@osticket.com>

search: Fix `is` advanced search match

Reviewed-By: Peter Rotich <peter@osticket.com>

topic: Sort localized list case insensitively

Reviewed-By: Peter Rotich <peter@osticket.com>

lock: Fix missing shutdown on navigation

Reviewed-By: Peter Rotich <peter@osticket.com>

* Set all "route department" filter actions to "unchanged"
* Fix bug in quick-add code where new option was not properly added

- Tickets cannot be closed when an open ticket exists
- Tickets/Tasks cannot be closed when required for close fields are missing
data
- Add isCloseable routine to ticket/task classes

Instead, locking would stay active and would warn you about expiring lock
after navigating away from a locked object.

Initially, include support only for Gravatar

lock: Implement lazy locking system

Reviewed-By: Peter Rotich <peter@osticket.com>

i18n: Add option to find similar translations

Sorta-Reviewed-By: Peter Rotich <peter@osticket.com>

Fixes #2328