Summary: This is mostly minor, but visually it makes the wiki feel more 'page like' and better separates the actual content from other data displayed.
Test Plan: Tested Chrome, iPhone, and iPad.
Reviewers: epriestley, btrahan
Reviewed By: epriestley
CC: aran, Korvin, AnhNhan
Maniphest Tasks: T2686
Differential Revision: https://secure.phabricator.com/D5366
Summary: Wanted to pull this out in case we don't use it in Maniphest, still useful perhaps in the future. Creates a sidebar that wraps when on mobile.
Test Plan: Tested UIExample
Reviewers: epriestley, btrahan
Reviewed By: epriestley
CC: aran, Korvin
Differential Revision: https://secure.phabricator.com/D5321
