Remove excessive newlines from an address
Use a predictable order of keys in the JSON output
Commit updated Labour PPCs from their new Candidates page
Update to Labour PPC scraper to use their new page

This scrapes people from
http://www.labour.org.uk/people/filter/c/candidate instead, which is
supposedly more up-to-date, although it finds fewer people.
Retry after Varnish errors from the Labour candidates site
Updates to the already-scraped Conservative candidates

This also switches to sorting the keys in each object for predictable
output.
Add a few new additions to the Conservative PPC list
Skip any entry where the constituency hasn't been filled in
Updates to the already-scraped Liberal Democrat candidates

This also switches to sorting the keys in each object for predictable
output.