Reset field content when building a new form

See: http://osticket.com/forum/discussion/85083/osticket-sends-no-html-mails#latest

Looked at crowdin and the term "Add Organization" is already used in the following context:
#: include/staff/templates/org-lookup.tmpl.php:82

So my suggestion is to use it also for this context here, which would not require a new translation ;)

Michael

Allow the staff banner to be set to empty (which is the default).

Also display the update errors back on the dialog for failed updated.

Fixes the missing icon before "Add new filter" in scp at the filters.php page

Show the form title on edit instead of "Custom Form" - which can be
misleading since the user might be editing a built-in form.

This script adds a single download script, 'file.php', which provides access
to files of all types to all users. It uses a HMAC signature system with an
expires time, which allows signed URLs to be sent to external users.

This also fixes an issue with the Http::cacheable() method, where the
last-modified and Etag headers were not properly compared, which resulted in
permanent cache misses by the client.

Use http::build_query instead of inline urlencode

This patch removes the selection of canned responses as well as the canned
responses navigation page from the ui when the canned responses feature is
disabled.

Since the automatic lock was being acquired but not passed to the autoLock
system, the automatically acquired lock was not being release on away
navigation.

This patch addresses the issue by passing the automatically acquired lock id
to the autoLock system on ticket-view page load and change the ::Init()
method so that the lock id is not cleared with the ::Init() method is called
by the page load.

Compare the database `state` field rather than the admin editable status
name.

Also fix a crash when re-rendering the new ticket by staff page after a
validation error.

Fixes https://github.com/osTicket/osTicket-1.8/issues/1277 and https://github.com/osTicket/osTicket-1.8/issues/1373

Since users can already log in via their email address, offer a friendly
error message when agents configure the user name to be an email address.

Footer should not be in #pjax_container, because the footer is not rendered
for non PJAX requests.

  * Use the title of "Information" with internal tag of "info"
  * Add "Visibility" column to UI and retire "Required" and "Internal"
    columns
  * Add visibility selection to new fields and show visibility to the user
    information fields when displayed on the ticket details form
  * Make the visibility settings translatable
  * Use constants internally for visibility configuration detection
  * Use a larger input when managing the information HTML content
  * Fix validation errors for new fields
    * Enforce new field name uniqueness
    * Enforce new field name character validation

Improve info display & formatting
Only show 8 chars of the last commit

Consider current status settings to determine if a ticket is reopen-able
Show a warning on staff's ticket view if the ticket is not reopen-able