v0.29.3 -- fix layout bugs on mobile

Addresses the following layout bugs in mobile view:

* improper rendering of award images on posts
* upvote ratio no longer appearing on bottom-right corner of post as
  before
* Reddit warning pop-up background cut off at bottom of page

Fixes #713.

v0.28.1

Remove font-weight associated with instance info button, which made the
icon look ghastly in Chrome.