Improve UX for customizing EditEngine forms a little bit

Summary:
Ref T10004. Tweaks some of the UX a little to be more intuitive/inviting?

  - Button says "Configure Form" instead of "Actions".
  - Root list is less "developer-ey" and more "explain what this is for-ey".

Test Plan:
{F1028928}

{F1028929}

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T10004

Differential Revision: https://secure.phabricator.com/D14808

src/applications/phame/editor/PhameBlogEditEngine.php

@@ -13,6 +13,14 @@ final class PhameBlogEditEngine
     return 'PhabricatorPhameApplication';
   }
 
+  public function getSummaryHeader() {
+    return pht('Configure Phame Blog Forms');
+  }
+
+  public function getSummaryText() {
+    return pht('Configure how blogs in Phame are created and edited.');
+  }
+
   protected function newEditableObject() {
     return PhameBlog::initializeNewBlog($this->getViewer());
   }