[1.0.X] Fixed #10633, #10691: marked strings in the comments app for...

[1.0.X] Fixed #10633, #10691: marked strings in the comments app for translation. Thanks, zgoda. Backport of r10427 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.0.X@10430 bcc190cf-cafb-0310-a4f2-bffc1f526a37