Trivial change to clarify profile matching

[sonicthoughts]

It took me and a few users a while to realise that when selecting profile matching for an existing contact, the option "Issue warning and do not save " actually means link to contact if event registration, contribution, etc.  This is not clear at all and link on match is IMO the preferred selection to avoid duplicates or worse - overwriting the wrong contact.  I thought something like this might be better: http://screencast.com/t/YyZQxGzr - a checkbox with a label "if embedded, link to contact record".  This would also create the option to prevent matching entirely.

I would code it myself if I could, but alas, this is my contribution to the cause ....