add 'genres' field to Movie object of ICapCinema

[qcookboob] undo previous modif on backends, exceptions  are handled by app

Diff checked manually.

autopep8 -a -ir -j2 --select=E711 .

This required the "agressive" option because it can change code
behavior.

Remove useless trailing \
Remove trailing spaces
Add missing empty lines

autopep8 -ir -j2 --select=E301,E302,E502,W291,W293,W391 .

Diff quickly checked.

autopep8 -ir -j2 --select=W601,W602 .
Diff checked manually.

[imdb] if birth date isn't complete => NotAvailable

[imdb] html characters converted

[piratebay] get_torrent return None if 404