Merge pull request #11 from SlrG/master

Fix display of Fanart for TVShows.
Fix import of runtimes from .nfo files

This will enable the agent to pull the runtime information
from tvshow.nfo and the episode .nfo files.

If no runtime is present in tvshow.nfo the median of the
episode runtimes will be used.
Merge pull request #13 from SlrG/runtime_new

Reworked import of runtimes from .nfo files