issue: Session form-data Files

Misc. Fixes

This commit addresses a case where a large thread entry body (emailed) is
stored as a file, when fetching it we have to make sure we're only fetching
plain text/html and not attachment files.

This is necessary because ticket filters or API can set an invalid help
topic id. Either deleted or no longer active.

issue: Newly Added Queues

issue: Duplicate Personal Queues

This addresses an issue where newly added queues in the Admin Panel do not
show up in the list of queues nor in the ticket view. This is due to the
function that does not set any additional flags on queues if one already
exists.

This addresses an issue where personal queues are duplicated in the main
queue sub-list.

issue: Existing User Registration

Creating Tickets with Attachments

This commit fixes an issue where we were not emailing attachments for initial responses when creating a Ticket.

issue: Default Help Topic Issue Summary

Implement Referral Internal Notes

oops: Selection Search Bug

Email Name Format

Filter Action Send an Email Issue

This commit fixes an issue we had with adding a Filter Action to Send an Email. We had an option at the top for 'Default System Email', however, it did not have the Email ID or address for the system email and would throw an error if chosen. Now, we just retrieve the emails with their IDs and values with the Default System Email being the initial value selected in the list of options.

This commit further corrects issues where emails were being sent out with names being improperly formatted if the name format is set as 'Last, First' or if it has special characters.

This addresses an issue introduced with 4124 where searching for a Selection
Field with the criteria "does not have a value" throws an `implode()`
warning.

This addresses an issue where registering as a non-existing user fails to
register nor create an account. This is due to a check added in `824e92`
that fails if there is no User model found for the address provided.

This commit stores internal notes if an Agent includes one while creating a Thread Referral.

This addresses issue 4473 where users creating a ticket with the Help Topic
preselected shows a validation error for the Issue Summary field. This is
due to the new `getFormName()` function that creates new field form names
based on the user’s/agent’s session. When the Help Topic is preselected,
`_form` is not set for each field so the hashed name of the fields before
ticket submit is different than after ticket submit.

This addresses an issue where `$_SESSION[':form-data']` files are not
including the new filenames.

Charset: Add generic transcode php_user_filter

Staff Profile Updates:

Filter Action Saving Fix:

This commit fixes the way we validate filter actions before saving a filter. Now, the code will accurately validate the action without needing a filter_id first while making sure all validations stay withing the validate_actions function.

issue: Image CID Attributes

issue: CDATA Phone Contains

forms: Disabled By Help Topic Users

This addresses an issue where images in email signatures containing a
`data-cid` attribute will either crash the ticket page or not show the image
in the signature.

This addresses issue 4470 where Users creating tickets via Client Portal and
failing to fill out a required field makes disabled fields by Help Topic
appear on the page. When the disabled fields appear they allow Users to
populate and save data that they were not meant to submit.

This addresses an issue where people who do not have a phone field on the
contact information form go to search for a User in the User Directory and
the system crashes. This is due to the search query that always contains the
phone field variable. This only adds the phone variable to the search query
if the field actually exists.