Fix lxml dependency.
Use check settings.AIRBRAKE['DISABLE'] instead of DEBUG in middleware
check.
The element.text attribute is not a method.
Don't call items() on a list.
Don't notify Airbrake asynchronously as this breaks the backtrace. Also,
if things are broke anyways, who cares if we wait a moment before
generating an error page.
Merge pull request #3 from WiFast/master

Bunch of Bug Fixes