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

Change the config table from a column-based table to a key-value table
with namespacing. This allows several parts of osTicket to store their
respective configurations in the same table without requiring database
structure updates

'namespace' is reserved in PHP

Drop required usage of MyISAM tables, and drop fulltext indexes as they
are not used in the code currently anyway. Also, use a blob to store
session data so as not to waste space with UTF-8 encoding. Lastly, fix
session_id storage to use VARCHAR(255) which is required for versions
of MySQL < 5.0.3, and use ascii for the storage model for the
session_id as it will contain simple characters only.

Typo

Make sure ticket api controller enforces attachments settings (don't trust data parsers).

Don't show reply/response section on new ticket form if the staff can NOT post replies... also checked in Ticket::open().

Show assigned to column based on flag - which now factors in if assigned tickets are being shown on open queue.

 -> Open - only contains unasssined tickets if 'show assigned tickets' is off.

Use minimized version of css.

Remove piping setting option - it's now part of ticket create service (which include XML & JSON)

added missing 's'

replace -- with —

added missing space

Add overlay + please wait spinner on form submit

* Change default sort order to DESC

1) Ability to limit who can post a reply
2) Expanded staff's stats view.