Fix Imdb.com DVDs/Blue-Rays

The current implementation contains a bug, which causes that all
images are shifted and therefore point at the wrong movie. This
patch fixes it.
Add Imdb.com In Theaters Now and Opening This Week

The new two provides give another look at the movies.
Fix dependency from extensions to application

The idea of Crawly's extensions is to totaly decouple extensions
from the host. It is done only using C# dynamic. The host should
know their extensions at compile time and extensions should know
their host at all.
Add new PublicHD provider

The new provider introduces multi-phased loading which enables loading
related resources. The providers are now sorted alphabetically.