* Modify the narrow icon in FontAwesome to make it better align to the pixel grid and display well on Windows+Chrome.
* Move the message controls to the right
* Hide the message info icon until the message is hovered / selected
* Switch the star to a gray version
* Increase the size of the gravatar
* Adjust the spacing
* Add the right-side message pointer
* Fix private message background colors and mention colors
* Modify star count test to account for new stars
* Bug fixes for stream subscription messages and other miscellanea.
(imported from commit 3d3d9de7e03f3658c5c78b492051b2b7f795487d)