This commits adds ability for agents to configure public queues.

* Customize Columns
* Set default sort & quick filter
* Add supplemental filters (criteria)

To support above features this commit also addresses confusing Advanced
Search UI to make it intuitive when dealing with a Saved Queue vs. Saved
Search vs. Adhoc Search

This commit adds var_dump test along with a few enhancements on the test
script.

Only ignore visibility constraints on private "searches" when staff is allowed to search the backend.
Access control is strictly imposed on ALL queues including inherited private sub-queues.

This addresses an issue where you can exploit XSS in the help-topic AJAX
request. This adds a check for a refferal URL and if none it will return
a 403 Forbidden Response.

This addresses an issue where the CSRF Token is displayed in the URL
when you preform a search in the Users Tab. This removes the token from the
request which removes it from the URL.

Updated to fix typo "information" on line 36

* Dont't fetch templates while in a loop
* Tidy up the code

Commit c4579277 introduced an extra administrative security feature to
restrict files access to signed in users only, even  if a user has a valid
& signed download URL. The feature, however, did not take into account
public images & files associated with FAQs and pages such as
landing/thank-you pages.

This commit addresses the shortcoming by adding a reference ID (attachment ID)
to the download/access URL, that can be used to deduce the model/object type
that the file request is associated with. The technique will allow us in the
future to enforce ACL at the file level depending on privacy settings and
the security clearance of the user (agent).

Account for the possibility of agents being deleted

This commit adds user's account username as one of the field to scan on quick lookup;

Conflicts:
	include/upgrader/streams/core/934b8db8-ad9d0a5f.task.php

Make selection fields play well with Advanced Search

Commit 5be0de0d introduced the idea of moving-up old saved searches to make
room for Custom Queues but failed to account for cases where the system
has more than 30 saved searches.

This commit addresses the issue by just re-inserting the old records after
queues are imported. It also adds validates & reformat the search criteria
to make the expected format.

This updates the Phone Field name back to `phone` and changes the flags
to make the variable name non-editable. This also adds a check for the
phone field on the User Form and if one exists adds it to the search.

Commit 5be0de0d introduced the idea of moving up old saved searches to make
room for custom queues - but failed to account for cases where the system
has more than 30 saved searches.

This commit addresses the issue by just re-inserting the old records after
queues are imported.

Unify ticket visibility as a routine to make sure it's applied uniformly.

Add thread entry action to create a new ticket. The entry is used to seed
ticket data like user, message (issue details) and attachments

Add thread entry action to create a new ticket. The entry is used to seed
ticket data like user, message (issue details) and attachments

Include attachments when creating a task from a thread entry

Log an internal note to parent ticket on status change
Reopen parent ticket if a closed task is reopened

Make sure that the task due date is not beyond ticket's due date.

This commit addresses a few issue in commit 131b366d

* Keep thread action triggers self contained
* Refresh the entire ticket page on successful thread action
* Fix bug where ticket id was hard coded

This adds a Ticket Thread Action for creating a Task. This action will
popup the New Task modal and will pre-fill the body of the New Task with
the body of the Thread Entry from which the action was made from.

Example:
Thread Entry - “I will need to check on the status of your account.”
Click Create Task from that Thread’s Actions
System will show New Task popup with the body as “I will need to check on
the status of your account.”

Add DateTimeField search descriptions options for supported methods

This commit addresses a few lint related issue - notable one is ignoring
undefined methods within source code comments.