A few architectural issues

[KeithCu]

• Consider refactoring the two URL dictionaries into one, and two URL lists for each website.
• It makes it easier to share feeds between both sites.
• Most sites return results in less than 1s, but some websites take 2 or 3 seconds. Try to return stale version, and create a thread to fetch. This way typically no one will ever have to wait for an HTTP fetch.