Convert rest of SPRITE_STATUS to FontAwesome

Summary:
Updates policy, headers, typeaheads to FA over policy icons

Need advice - can't seem to place where icons come from on Typeahead? Wrong icons and wrong colors.... it is late

Test Plan:
- grepped for SPRITE_STATUS
- grepped for sprite-status
- grepped for setStatus for headers
- grepped individual icons names

Browsed numerous places, checked new dropdowns, see pudgy people.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: epriestley, Korvin

Maniphest Tasks: T4739

Differential Revision: https://secure.phabricator.com/D9179

src/applications/diffusion/controller/DiffusionRepositoryController.php

@@ -150,11 +150,11 @@ final class DiffusionRepositoryController extends DiffusionController {
       ->setPolicyObject($repository);
 
     if (!$repository->isTracked()) {
-      $header->setStatus('policy-noone', '', pht('Inactive'));
+      $header->setStatus('fa-ban', 'dark', pht('Inactive'));
     } else if ($repository->isImporting()) {
-      $header->setStatus('time', 'red', pht('Importing...'));
+      $header->setStatus('fa-clock-o', 'indigo', pht('Importing...'));
     } else {
-      $header->setStatus('oh-ok', '', pht('Active'));
+      $header->setStatus('fa-check', 'bluegrey', pht('Active'));
     }