- 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.

pjax: Fix missing global `event` on Firefox

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

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

Show auxiliary data for the organization at the end

We're sticking with user for now until 2.0

storage: Avoid using `strlen` to count bytes

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

Fix wrong ticket count on basic ticket search

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

Change the order of organization data export

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

bad links fixed

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

On validation errors, `$faq` will be set to something non-null, like
`false`, but will not be an instance of a Faq article.

For PHP installations that have `mbstring.func_overload` enabled (set to a
value including `2`), the `strlen` function will be overloaded to use the
`mb_strlen` equivalent. Problematically, the internal encoding of `UTF-8`
will be applied to all file content, which will count UTF-8 characters
rather than bytes. This will cause the data to be saved correctly; however,
the `size` recorded in the %file table will be recorded incorrectly.

This patch allows the backend to report the size of the contents saved with
the request and provides a failsafe mechanism which will use the mbstring
equivalent if available, and the mbstring version is coded to use the `8bit`
as the encoding which will prevent reading characters.

References:
https://github.com/osTicket/osTicket-1.8/issues/552

Show auxiliary data for the organization at the end