* Added account_url filter to jinja2 environment. This produces a path
  to the user's account url (/account/{username}).
* Updated archdev-navbar to link to new edit route.
+ Added migrate_cookies(request, response) to aurweb.util, a function
  that simply migrates the request cookies to response and returns it.
+ Added account_edit tests to test_accounts_routes.py.

Signed-off-by: Kevin Morris <kevr@0cost.org>