Move PHUIErrorView to PHUIInfoView

Summary: Since this element isn't strictly about errors, re-label as info view instead.

Test Plan: Grepped for all callsites, tested UIExamples and a few other random pages.

Reviewers: btrahan, epriestley

Reviewed By: epriestley

Subscribers: hach-que, Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D11867

src/applications/diffusion/controller/DiffusionRepositoryController.php

@@ -68,9 +68,9 @@ final class DiffusionRepositoryController extends DiffusionController {
     if ($page_has_content) {
       $content[] = $this->buildNormalContent($drequest);
     } else {
-      $content[] = id(new PHUIErrorView())
+      $content[] = id(new PHUIInfoView())
         ->setTitle($empty_title)
-        ->setSeverity(PHUIErrorView::SEVERITY_WARNING)
+        ->setSeverity(PHUIInfoView::SEVERITY_WARNING)
         ->setErrors(array($empty_message));
     }