Merge pull request #622 from Poodlemastah/Pistachitos

Add user-agent to authentication header, fixes SCC provider
SCC: Search in archive url for Season packs
Fix git updater for git version < 1.7.2 (itofzo)
Merge branch 'Pistachitos' of https://github.com/mr-orange/Sick-Beard into Pistachitos
Remove obsolete functions using open (itofzo)