This reverts commit ade773cb0a.

Squashed commit of the following:

commit 3842f87986
Author: Surinna Curtis <ekiru.0@gmail.com>
Date:   Mon Jul 3 19:57:39 2017 -0500

    Fix some style issues

commit 08628a0234
Author: Surinna Curtis <ekiru.0@gmail.com>
Date:   Mon Jul 3 19:35:22 2017 -0500

    Improved styling and layout of select app settings

commit 1787a7c20f
Author: Surinna Curtis <ekiru.0@gmail.com>
Date:   Mon Jul 3 17:13:53 2017 -0500

    remove the layout selector ui from the drawer

commit 7d93b180b1
Author: Surinna Curtis <ekiru.0@gmail.com>
Date:   Mon Jul 3 17:01:51 2017 -0500

    Add layout setting to app settings modal

This will cause it to match the shading of the container behind it.

- built in fullwidth styling
 - letterbox settings toggle
 - media no longer counts towards height when making toot-collapsing
measurements

- Media toots are no longer auto-collapsed if the media is behind a CW
- Display names no longer appear clickable when a toot is collapsed
- Fixed #36 by adding reduplicating the media icon inside the SHOW
MORE/LESS

* feat(components/media_gallery): Responsive images

* fix(components/media_gallery): Link to image URL

This also resolves the issues where sometimes the timestamps wrap and also sits unpleasantly close to the … button.

* Remove unused column_collapsable.js
* Remove old styles
* Extract `> div`  style to independent class

Avatars now have consistent styling across all pages; border radius can be adjusted with a SASS variable ($ui-avatar-border-size)

* Replace TextIconButton for SensitiveButton to IconButton

* line-height

* Unread indicator was invisible behind column header, adjusted

* Unread indicator now a CSS pseudo-element

* Adjust flex

* Re-add clear notifications button

* remove connect() in column_settings

* one line

* remove unused props