BUG Fixed incorrect html encoding of SimplePie rss titles

SimplePie values returned as titles will have HTML entities already encoded. E.g. `Saatchi &amp; Saatchi`. Since this value is rendered in the template via a `Text` field, it's necessary to convert these entities to their respective characters being passed in. This will fix issues with special characters being double escaped on the front end.

I would prefer this method to using a HTMLText field as it is more effective at preventing HTML injection attacks.