add links to educational resources on harassment/exclusion

The "If you make anyone feel uncomfortable or unwelcome, you will be asked to leave" sentence is a very clear and succinct explanation of what constitutes harassment, and what the consequences are;  In general, I think the brevity / generality of the anti-harassment statement (as opposed to the rather more verbose style of enumerating a long but non-exhaustive list of forms harassment can take) is a good thing, as it's intrinsically open-ended.

I feel there's a trade-off here though: making the anti-harassment statement as general and open-ended allows us to react to unforeseen forms of harassment more easily than if we had an explicit list of behaviours constituting
harassment (and reduces the potential for language-lawyering).

However, a more explicit statement of what actions and behaviours constitute harassment would be advantageous from a pro-active point of view, as it'd better allow LRUG attendees to educate themselves and
monitor their own behaviour before an incident happens. 

With that in mind, I've added a paragraph with links to some useful anti-harassment 101s, as well as explicit statement that good-faith intentions are not a defence. I think this should help educate people and allow us to monitor our own behaviour, without over-burdening the anti-harassment policy with specifics (and hence diluting it, as described above).

(Thanks to @camilleldn who collaborated on this)

Cheers!

Tim