Add user and organization context to filters

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

Allow developers to specify a sorting position for groups of fields
selectable in the criteria select drop-down

Load sample organization with custom data/fields

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

Make the organization page happy!

ldap: Attempt auto client registration for all backends

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

Conflicts:
	open.php

The ThreadEntryWidget has a potential cross site scripting (XSS)
vulnerability if data was posted directly to the page hosting the widget

Vulnerable URLs:
view.php, open.php, scp/open.php, scp/tickets.php

The content received in the HTTP POST is now correctly escaped when it is
echoed back to the user agent.

Change verbage displayed at templates.php to express 'sets'

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

- Change the table header from `Email Templates` to
  `Email Template Sets`
- Change `Add New Template` to `Add New Template Set`

This removes any possible confusion for new users. Instead of
thinking that they have one template because it displays one
template set, the new verbage will clarify that the table
at templates.php is a list of their template sets.

Ticket assignment alert can be disabled

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

ban list: Trim new entries and updates via web form

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

tnef: Fix major issue iterating over attar streams

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

pjax: Fix missing global `event` on Firefox

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

The original logic would read the count of attributes in the stream and then
read the first attribute in the constructor of TnefAttributeStreamReader.
Then the iterator interface would call ::rewind() before iterating to the
first item. rewind() set the @pos attribute to zero, which would cause the
attribute count (4-byte int) to be interpreted incorrectly as part of the
first attribute.

The new logic sets the position at 4 after rewind()ing, and does not read
the first attribute twice. It also properly detects the end of the attribute
stream by the number of attributes advertised as the first four bytes of the
stream (read into the @count attribute initially).

Change client to user

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

user preview tool tip

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

pjax: Fix a few more small issues

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

notes: Hide new note box when editing a note

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

Show user search box when adding a new user

Link to org & user landing pages & kill pjax on internal pages