Link validation and make test

 - HTML Validator now checks for links
 - External link results are stored in bin/validator/cache
 - bin/validate runs the validator with all htmls files
  - it also generates a temporary webcam.jpeg
 - make test -> bin/validate
Fixes to validator errors
Remove query string and fragments from uri checks
Add blockquote as a valid tag
Correct handling of realtive path names
Add a todo list
Fix non-self-closing hr + br tags
Validation fixes: quotesUnknown1.html
Validation fixes: Minutes 26th June 2001
Validation fixes: Minutes 27th Sept 2001
Validation fixes: Minutes 26th Oct 2001
Vaildation fixes: Minutes 17th Jan 2002

This actually invovled getting the actual minutes file
out of the old version of the site - I'd somehow ended
up with the secondary actions list only :/
Validation fixes: replace <big><strong> with <h3>
Validation fixes: remove dead link to events page
Validation fixes: Remove dead links in Minutes 17th Jan 2002
Validator fixes: Minutes 12th Feb 2002
Validation fixes: Minutes 2002-03 Session
Validation fixes: Minutes 2003-04 session
Validation fixes: Minutes 2004-05 session
Validation fixes: Minutes from 2005-06 Session