Shift error checking into Mail_Parse::parseAddressList

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

Simplify workflow for new ticket by staff

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

forms: Allow searching any priority

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

If the system has only one help topic automatically select the help topic
and display any associated custom form.

Priority field and custom list fields have a prompt value (shows up only for
drop-down widget). And the short and long answer fields have a placeholder
configuration item.

Ignore case for ticket variables on custom fields

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

Search for system emails in To and Delivered-To

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

This is needed to help us remove invalid characters set by some mail
clients.

Previously, the Delivered-To header was only used if the To header was not
found

i18n: Much better compat imll of mb_* funcs

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

The original compatibility functions for the mb_strlen, mb_strpos, and
mb_substr functions was not implemented correctly. This patch uses the PCRE
library to do Unicode processing

pipe: Use Delivered-To and Message-Id from outer

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

If a wrapped mail is sent, copy the Delivered-To header into the nested
message so it will be clear(er) how the mail arrived into the system. Also,
copy the Message-Id into the nested mail if there is none to help against
mails delivered repeatedly.

oops: Fix report time frame interpretation

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

Fix E_STRICT output from config class

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

Send staff alerts as Notice as opposed to an AutoRely

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

Some emails providers (e.g gmail/google) won't deliver emails marked
bulk/autoreply to group email address.

Ensure images, when initially placed, have a width

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

html: PHP DomDocument classes are in the `dom` ext

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

Fixup Unicode whitespace mangling

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

Fix a few link issues in the ticket thread

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

Until we add text/plain bodies to the ticket thread without an enclosing
<pre> element, we should not treat the <pre> element like a code or
blockquote block.

On some combinations of operating systems, PHP and libpcre versions, `\s`
will match the iso-8859-x non-breaking-space, 0xa0. This regular expression
will munge the UTF8 encoded version, 0xc2a0 to 0xc220, which is not a valid
UTF8 character.

When inserted into a UTF8 field in mysql, the text will be truncated at and
after the first invalid character.

These functions don't appear to be used an could corrupt UTF-8 encoded text

Feature/auto replies

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