* Action/reducer for changing column settings takes a path and a value
instead of a javascript object
* Settings menu version and column headline version working simultaneously
* remove column headline entirely
* remove css for headlines that aren't possible now
* Remove commented out code from unfruitful attempt at this feature
* Give direct timeline its own column settings bc it doesn't have a media only option
* Fix typo in public timeline code that was preventing per-column settings from working properly
* Fix codeclimate issues
* Missing semicolons
* Use redux state to set onlyMedia, let that do the update instead of a callback. Consequently, unpinned setting works without history modification
* Unused import
* Allow mounting arbitrary columns
* Refactor column headers, allow pinning/unpinning and moving columns around
* Collapse animation
* Re-introduce scroll to top
* Save column settings properly, do not display pin options in
single-column view, do not display collapse icon if there is
nothing to collapse
* Fix one instance of public timeline being closed closing the stream
Fix back buttons inconsistently sending you back to / even if history exists
* Getting started displays links to columns that are not mounted
