Provider update.

* Ofdb person provider added.
* Ofdb movie provider updated.
* Json testfiles for ofdb and tmdb updated.
Unittests for movie and person provider updated.
Tmdb person/movie/commonmodule updated.
Genre normalization module added.

* genrenorm.py - a normalization class working with a global and provider
  normalization mapping
* '*.genre' files to define provider genre -> global genre mapping
* normalized_genre.dat, global genre table for simple normalization