Fixes #1620 - Gets all functional tests to work offline.

[brizental]

r? @miketaylr

[miketaylr]

I get some test failures: https://gist.github.com/miketaylr/4becab632120c9bf83463f2eabf1272d

Do they all pass on your machine?

[miketaylr]

yes

[miketaylr]

oops, forgot to run in test mode. >_<

[miketaylr]

@brizental can you check out these failures, por favor?

FAIL: firefox on any platform - Issue-list - Pressing g goes to github issues (1ms)
TypeError: (intermediate value).end is not a function
  at Test.Pressing g goes to github issues [as test]  <tests/functional/issue-list-non-auth.js:207:15>

FAIL: firefox on any platform - Search (auth) - Search works by Return key (10289ms)
NoSuchElement: An element could not be located on the page using the given search parameters.
  at Test.Search works by Return key [as test]  <tests/functional/search-auth.js:135:12>

[brizental]

The first test was actually a typo, I fixed it. The second test is really failing but it's not related to this issue, probably something like #1470 I'll look into it at some point.

[miketaylr]

👍