About page now includes links to the mySociety "Volunteering for TheyWorkForYou" page.
Wikipedia linker no longer attempts to link phrases which are already part of a hyperlink.
Helpful comment for the new regular expression.
Made wikipedia link replacement case insensitive
Glossary linker will now no longer attempt to link phrases which are already within a link.
Correctly escaping slashes in new regex.
Regex now happens in the right places for all cases.
Wikipedia links now only happen on distinct words (ie bound by whitespace), and replace with source text not wikipedia titles.
Removed glossarise_titletags(), as this is now handled in the regex for replacement first time round.
Removed glossarise_titles from other locations.
Wikipedia linker is now case sensitive again to prevent it being overly zealous in linking innocuous phrases.
Limit replacements for glossary to 1 per speech.
Wikipedia links now use double quotes, as should be the case.
Revert "Wikipedia links now use double quotes, as should be the case."

This reverts commit 4893dd6d9ae605064164e2f6782e9cf0bdb36b5a.
Fixing the fact that I can't use git and correctly applying Wikipedia double quotes fix.
Re-enabling APC in repository code.
Merge branch '133-volunteer-link'
Merge branch '17-glossary-titles-fix'