Add in sidebar with single question survey

Questions etc hardcoded at the moment
Add FAQ entry on mini survey
Add mini survey to pages with sidebars
Slightly better wording for mini survey submit button
Fix return_url generation for MP pages

becuase there's redirect magic etc going on we should use
the canonical MP URL to generate the return url
Add mini survey to list of debates for a day
Add survey question across top of debates page

Nowhere else sensible to put
move mini survey about link to save vertical space
allow user to skip current mini survey question

Sets the same cookie as answering sets so we can show them the
another question
comment out debates survey while I try and think of a better solution

At the moment it's a bit intrusive so I'm going to sit on this for a bit
while I see if I can think of a better place to put it
URL class doesn't add http:// to URLs so we have to do it

The MP URL generation code does add the http:// so we can't add it in
the form element
Don't add http:// to hide url in link as it's already included
Show survey block using jquery animation

Partly to attact attention to it and partly to get round hassles with
browser caching meaning people will get the survey displayed to them
even after they have answered/ignore it. Slight kludge disguised as
feature going on here.
Merge branch '221_add_survey'

Conflicts:
	www/docs/style/global.css