Minor improvements to Diviner layout

Summary:
  - Render functions as `func()` for consistency/clarity.
  - Sort articles first.
  - Sort case insensitively.
  - Label the "no group" symbols.

Test Plan: Regenerated and examined docs.

Reviewers: btrahan, chad

Reviewed By: chad

CC: aran

Differential Revision: https://secure.phabricator.com/D8480

src/applications/diviner/controller/DivinerBookController.php

@@ -46,6 +46,7 @@ final class DivinerBookController extends DivinerController {
       ->setViewer($viewer)
       ->withBookPHIDs(array($book->getPHID()))
       ->execute();
+
     $atoms = msort($atoms, 'getSortKey');
 
     $group_spec = $book->getConfig('groups');
@@ -64,8 +65,11 @@ final class DivinerBookController extends DivinerController {
     $out = array();
     foreach ($groups as $group => $atoms) {
       $group_name = $book->getGroupName($group);
+      if (!strlen($group_name)) {
+        $group_name = pht('Free Radicals');
+      }
       $section = id(new DivinerSectionView())
-          ->setHeader($group_name);
+        ->setHeader($group_name);
       $section->addContent($this->renderAtomList($atoms));
       $out[] = $section;
     }

src/applications/diviner/controller/DivinerController.php

@@ -29,8 +29,18 @@ abstract class DivinerController extends PhabricatorController {
 
     $list = array();
     foreach ($symbols as $symbol) {
+
+      switch ($symbol->getType()) {
+        case DivinerAtom::TYPE_FUNCTION:
+          $title = $symbol->getTitle().'()';
+          break;
+        default:
+          $title = $symbol->getTitle();
+          break;
+      }
+
       $item = id(new DivinerBookItemView())
-        ->setTitle($symbol->getTitle())
+        ->setTitle($title)
         ->setHref($symbol->getURI())
         ->setSubtitle($symbol->getSummary())
         ->setType(DivinerAtom::getAtomTypeNameString(