Merge pull request #3 from ksmandersen/master

Fix: Some URLS for banners and thumbs would return the base URL when not available instead of nil
FIX: Returning wrong identifier when loading details from xmlDocument
Merge branch 'master' of git://github.com/simonbs/CharlesTVDB

# Via Simon Støvring
* 'master' of git://github.com/simonbs/CharlesTVDB: