Code parsing, use onlinewardleymaps regex

[tractorjuice]

The onlinewardleymaps code has definitions for the map code. This is used to support an OWM syntax highlighter for the ACE editor, more here, https://ace.c9.io/#nav=higlighter

We should use these regex definitions.

[anjackson]

Thanks, that sounds like a good idea. I know there are some differences in regex syntax between different implementations but I think they are fairly esoteric.