Fixes #575

Fixes #588

And include the new location of the install SQL script

Introduced with the multi-stream upgrader

Crypto wrapper - implements tag based en/decryption utils

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

Add password-reset signals for auditing

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

Avoid extra db query for schema signature

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

Ensure cookie path is set for the session cookie

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

Drop old mcrypt class

Which will help against clobbering session cookies against other PHP
applications shared on a parent domain of the domain hosting osTicket or in
a parent folder or virtual folder.

* Move migration scripted tasks to the stream folder naming them .task.php.
* Add a MigrationTask abstract class to server as the base of migration
  tasks.
* Move the migration tasks from class.upgrader to the new task files

Add web.config for IIS to serve the API

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

Sanitize log entries

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

Inline Attachments

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

Properly escape HTML chars in text/plain email bodies

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

Only set "ft" field if requested

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

Add "Assigned To" and other fields to ticket export

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

Add cipher validator - checks to make sure the cipher is valid & available.

Only use 8 bytes (64-bits) for the IV data (salt) for the encryption keys,
except for Mcrypt, which requires you to query the specific length and use
it specifically.

Add test function - basic testing (will be replaced by real test suit)

Incoming messages with empty body and an inline attachment might not have
parts - depending on encoding used.

* Use "-" tag for emails with empty body/message