Some pages load for more than 20s

[psivesely]

Separate from issue #21, I've noticed sometimes pages will load for longer than the 20s timeout set, but do eventually time out. It seems that sometimes the timeout will not occur until 2 minutes--exactly--into the page load attempt. For example, I just watched this happen with http://vtduisq4g6heuzom.onion. Other times it is a more irregular timeout such as 1m19s, or some other value usually in the (20s, 120s) interval.

[psivesely]

Closing in favor of #87.