Decode HTML entities before passing title or content to htmLawed

Yet another quick fix for an issue I've noticed with some feeds, as some HTML tags weren't being removed properly from the title.

Some websites encode the title or content of their feeds with HTML entities (for example the Wired feed). HtmLawed doesn't recognize tags that are already entity encoded, so we have to decode them first in order for htmLawed to neutralize/remove all tags correctly.