closes #6878

This reverts commit 18110288.

Add rel="noopener noreferrer" to autolinks

closes #6876

closes #6877

since Travis' wget has no clue what SNI is
who needs security anyway, right?

the Amazon S3 connection at Travis seems to be a bit flaky...

Use Poltergeist instead of Selenium

since it causes an ugly warning in the console!

Fix possible duplication of AspectVisibility

Don't include wrong shareable types in scopes

Update status message text after prefilling mentions

fix spec for ApplicationHelper#changelog_url

Eslint drop max nested callbacks and add "=" marker to spaced comment

fixes #6866
upstream https://github.com/zendesk/eslintrb/pull/7

remove REDISTOGO_URL deprecation

Use eslint instead of jshint