Allow selecting text when creating inline comment

Summary:
It is currently not possible to select source code covered by reticle when creating comment.
This diff hides reticle on mouseout from reply area.

Test Plan:
Hover inline comment, verify that reticle is displayed.
Reply, verify that reticle is displayed when mouseover reply, hidden otherwise.
Repeat for create.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, epriestley

Differential Revision: https://secure.phabricator.com/D1851

src/infrastructure/diff/controller/PhabricatorInlineCommentController.php

@@ -201,6 +201,8 @@ abstract class PhabricatorInlineCommentController
     $edit_dialog->setUser($user);
     $edit_dialog->setSubmitURI($request->getRequestURI());
     $edit_dialog->setOnRight($this->getIsOnRight());
+    $edit_dialog->setNumber($this->getLineNumber());
+    $edit_dialog->setLength($this->getLineLength());
 
     return $edit_dialog;
   }