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

Basic search is now limited to ticket number, email address and name.