Add branch, tag info to Diffusion Headers

Summary: Improves overall UX of browsing Diffusion. Clarifies branch and tag when possible, changes 'home' to 'code', uses tabs in more locations. Fixes T12837

Test Plan: Review branchs, tags, git, hg, search, browse, history.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Maniphest Tasks: T12837

Differential Revision: https://secure.phabricator.com/D18434

src/applications/diffusion/controller/DiffusionRepositoryController.php

@@ -98,7 +98,7 @@ final class DiffusionRepositoryController extends DiffusionController {
         ->setErrors(array($empty_message));
     }
 
-    $tabs = $this->buildTabsView('home');
+    $tabs = $this->buildTabsView('code');
 
     $clone_uri = $drequest->generateURI(
       array(
@@ -300,6 +300,7 @@ final class DiffusionRepositoryController extends DiffusionController {
 
   private function buildHeaderView(PhabricatorRepository $repository) {
     $viewer = $this->getViewer();
+    $drequest = $this->getDiffusionRequest();
     $search = $this->renderSearchForm();
 
     $header = id(new PHUIHeaderView())
@@ -325,6 +326,14 @@ final class DiffusionRepositoryController extends DiffusionController {
       $header->setStatus('fa-check', 'bluegrey', pht('Active'));
     }
 
+    if (!$repository->isSVN()) {
+      $default = $repository->getDefaultBranch();
+      if ($default != $drequest->getBranch()) {
+        $branch_tag = $this->renderBranchTag($drequest);
+        $header->addTag($branch_tag);
+      }
+    }
+
     return $header;
   }