Make tests run more smoothly

[bobdenotter]

• Make Kakunin output less warnings
• Don't crawl images from Unsplash when runnin tests
• Don't break if weatherwidget can't reach wttr.in, or if it's over quota
• Make Kakunin run again. See: Kakunin failing to run, exits with code: 100 TheSoftwareHouse/Kakunin#188

[bobdenotter]

Fixed after transitioning to Behat.