One Click Hoster Support

This is a first try to implement some One Click Hoster support for couchpotato. 
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I've chosen 'pyload' (http://pyload.org) as default OCH downloader and built a working couchpotato plugin. I added some german sites, that provide daily new OCH Links.
The current version is already working quite stable. It includes handling of failed downloads and is also using mirrors if available.

Nevertheless there are some issues, that require a more professional view on these things:
1. webscraping algorithm isn't really optimized (I have to grab all data before pyload chooses if the link is valid or not).
2. Another issue is supporting the language specific titles. I've found a solution to grab alternative language titles from the tmdb plugin, but it's neither really nice implemented nor really consequent to handle english titles in GUI and german titles in search queries.