Fix dropping of materialized view when variable name is changed

Ensure view exists before merging updates

Prevent possible sql injection error in field name used in the materialized
view.

Prevent possible xss error in the display of the field label and variable
name in the admin panel.

Fix adding fields to an existing form

Ensure aquireLock doesn't interfere with renew/release

Otherwise, you can't click on the custom form in the table view in order to
manage it.

Fixes osTicket/osTicket-1.8#276

Previously, the user information could only be modified on the ticket-view
page. For instance, if creating a new ticket for a user, no new information
could be added or modified on the user until after the ticket was created

Fixes osTicket/osTicket-1.8#281

Change thread entry title bar to use more flexible layout using div's and
span's in hopes of avoiding unnecessary wrapping -- especially in the poster
name column..

Fixes oversize image display to be resized in both the ticket thread and
the redactor editor in (at least)

  * Ticket-view boxes
  * Client new-ticket form
  * Staff new ticket
  * Page add/edit
  * FAQ add/edit
  * Canned response add/edit

Fixes osTicket/osTicket-1.8#247

If _SERVER{REQUEST_URI} does not start with a leading slash, add one. This
will ensure that the redirect URL offered after a successful login will
be to an absolute url rather than an implied relative one.

Fixes osTicket/osTicket-1.7#858

Unpack user data for filtering purposes for staff created tickets

- Remove Client form
- Provide name and email fields for cases where use is not selected (JS
issues)

Add ability to change ticket owner on ticket view
Add get last updated date to user class

Fix odd CSS error

The upstream ORM method was removed

without required, internal contact field

Fix duplicate phone number (again)

  * Require a label on form fields
  * Require variable name to be unique per form
  * Fixup duplicate phone numbers on upgrade

Fix width of the ticket thread body
Add consistent font styling between Redactor and thread body

This include URLs in embedded links as well as URLs for external images and
videos embedded via iframe elements.

Also add images on pages to the drop-down list for image choosing, and fix
display of images on the client portal.