Refs #531: Made `id` attribute of doc widget outer div all lower-case. Removed unnecessary `py:attrs` directive and passing of `id` argument which can be created in the template code from the `title` variable.

git-svn-id: https://svn.apache.org/repos/asf/bloodhound/trunk@1488759 13f79535-47bb-0310-9956-ffa450edef68