Minimalist white theme - first draft

Signed-off-by: emanuele <emanuele45@gmail.com>
Merge pull request #1 from emanuele45/minimalist_white

You wanted it :P
A bit better poster area (though I don't like so much the ellipsis)

Signed-off-by: emanuele <emanuele45@gmail.com>
A but more dark text in some places

Signed-off-by: emanuele <emanuele45@gmail.com>