* 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)
* renamed the 'icon-star' style to 'icon-vector-star' to keep backwards compatibility for icon-* classes
* changed relevant styles in zephyr.css; added FontAwesome assets
* changed relevant CSS classes in base.html, left-sidebar.html, ui.js, message.handlebars
* added new fonts.css to start consolidating all font-based assets
* added fonts.css to PIPELINE_CSS in settings.py under 'portico' and 'app'
* modified the stars test suite to reflect new star icon class name.
(imported from commit 3116fcfd4b5fb4edecd457da554fea616bb7081b)