Add forgotten abort() method of the Upgrader trampoline class, and allow
getErrors() not to crash if not upgrading

Allow SLA to be migrated

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

SLAs can be marked transient. When a ticket is assigned to a transient SLA
and it is transferred to a department or help topic having a default SLA,
the SLA will change to the SLA of the new department or help topic. This
process can continue as long as the ticket has a transient SLA assigned.
Once a non-transient SLA is assigned to the ticket, the SLA will no longer
change automatically. Thereafter, the SLA can only be manually changed.

Fixup old ..MsgTemplate() getters which returned arrays

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

Spelling, grammar and readability fixups

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

Update settings-pages.inc.php

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

on line 14 of settings-pages.inc.php the section: <a href="pages"> should read: <a href="pages.php">

Spelling, grammar and readability in upgrader documents
  - Tweaked spelling, grammar and wording to make the text of the upgrader
    pages more readable.
Fixed spelling regression
  - Higly —> Highly
Spelling and readability fixes for /include/class.* files
  - Fixed some spelling mistakes
A couple more spelling/readability fixes.
  - More fixes

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

Fix attachments posted to pipe.php

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

client email not being trimmed?

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

Add a dry-run feature to unpack and deploy

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

Allow parallel database upgrade streams

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

Allows direct editing of XHTML code in the nicEdit pane

Allow the installation to use the same streams config and schema signatures
as the migrater

Allow the install to install mulitple database streams

DB Error #1064 / Template Fetch Error

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

Allow `streams.cfg` to be implied as 'core', which will default to only
upgrading the core osTicket stream.

Use signature to describe snapshots rather than md5

This patch allows the upgrader to upgrade multiple database update
'streams'. The main stream is renamed to 'core' to reflect changes made
to the config class. This will significantly ease customizations
requiring database customizations, and will make plugins requiring
database changes possible.

- Handle decoding large base64 encoded attachments better
- Avoid transcoding from one charset to the same
- Avoid encoding attachments without a declared charset

When creating tickets, ensure that data which should not contain leading or
trailing whitespace is trimmed and validated accordingly

This will allow an administrator to visualize the files changed in the
deployment before actually copying out the new files

Add customer-facing pages and federated email templates

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

 - Supported pages: landing, offline, thank-you and other

Provide failsafe encoding for email message bodies
Reviewed-By: Peter Rotich <peter@osticket.com>

If the body of an email message is written and encoded with an unrecognized
charset (like 'iso', for instance), then use the original text, assumed to
be 8-bit encoded. This patch will create idiosyncrasies, where text might be
transcoded to utf-8 incorrectly, but it should eliminate instances where
email message bodies are missing due to incorrect charset labels.

Fix pass-by-reference bug in authentication signal

Disable cron during upgrade

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

Turn off output_compression for downloads

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