ariatemplates/ariatemplates — pull request #462 by flongo (2013-04-16 15:02:49+00:00)
Title: aria.widgets can be undefined in TemplateCtxt

When no class in aria.widgets package is loaded, `aria.widgets` is undefined.
Before checking if `aria.widgets.AriaSkin` is defined, the existence of `aria.widgets` has to be checked first.