Replace Sprite-Icons with FontAwesome

Summary: The removes the sprite sheet 'icons' and replaces it with FontAwesome fonts.

Test Plan:
- Grep for SPRITE_ICONS and replace
- Grep for sprite-icons and replace
- Grep for PhabricatorActionList and choose all new icons
- Grep for Crumbs and fix icons
- Test/Replace PHUIList Icon support
- Test/Replace ObjectList Icon support (foot, epoch, etc)
- Browse as many pages as I could get to
- Remove sprite-icons and move remarkup to own sheet
- Review this diff in Differential

Reviewers: btrahan, epriestley

Reviewed By: epriestley

Subscribers: epriestley, Korvin, hach-que

Differential Revision: https://secure.phabricator.com/D9052

src/applications/phame/controller/PhameController.php

@@ -114,12 +114,12 @@ abstract class PhameController extends PhabricatorController {
       id(new PHUIListItemView())
         ->setName(pht('New Blog'))
         ->setHref($this->getApplicationURI('/blog/new'))
-        ->setIcon('create'));
+        ->setIcon('fa-plus-square'));
     $crumbs->addAction(
       id(new PHUIListItemView())
         ->setName(pht('New Post'))
         ->setHref($this->getApplicationURI('/post/new'))
-        ->setIcon('new'));
+        ->setIcon('fa-pencil'));
     return $crumbs;
   }
 }