Add routine to import emailed & api files

Issue/428

Increase the size of varchar fields

Make collation consistent - utf8_general_ci.

Fix input field name typo

Default nonsensical charsets to ASCII.

Support IP forwarding for load balanced instalaltions.

Default SLA

Sanitize user input.

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

Which will allow for a modular approach to command-line scripting of the
osTicket system. Hopefully, it will alleviate the need to copy+paste code
between scripts and otherwise duplicate functionality between locations. It
will also allow for easier administration of osTicket by shipping scripts to
do things like database maintenance, statistics exports (collectd), data
exports, etc.

The first example script include the capability to unpack the osTicket
installation/upgrade tarball to the destination install path with optionally
placing the include folder in a different location. The script will monkey
patch main.inc.php so that the INCLUDE_DIR define will point to the
installed location of the include/ folder.

Issue/385

Add check to make sure we don't already have an existing (current) installation - before we get to prereq. stage.

Add note poster on ticket's mass processing.

Notification Bars

Installer revisited