Update random.js

Setting randomWords paranoia level to 6, which is the default level suggested on https://github.com/bitwiseshiftleft/sjcl/wiki/Symmetric-Crypto#generating-random-bytes
Also removing unreachable line at end of function.

Order loaded voter files by date

Import and serve only enabled auth systems urls

Various minor changes

Prevent trustee enumeration

Prevent trustee enumeration by returning the same 404 error both if trustee is not found or secret does not match

Also, return a different 404 if election isn't found (instead of redirecting to home)

Remove unused import causing deprecation warning

Warning in the form:
RemovedInDjango19Warning: "ModelXYZ" doesn't declare an explicit app_label
Apparently this happens because it tries to import models before app
configuration runs

Fix not allowed navigate top frame

updated software versions & will attempt to fix travis

Google Chrome raises the following error when trying to show
trustee key content as top frame data URL:
"Not allowed to navigate top frame to data URL"
See:
https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/GbVcuwg_QjM%5B1-25%5D
Tested in Firerox 64.0.2, Chrome Version 71.0.3578.98 and Safari Version 12.0.3