fix seed/lech score formula, fix #2605
Added delete files button, #2596 (manuall merge)
Updated YIFY provider to use proxies and magnet links, #2560 (manuall merge)
better score forumla for seeding/leeching
Merge branches 'develop' and 'tv' of https://github.com/RuudBurger/CouchPotatoServer into tv

Conflicts:
	couchpotato/core/media/movie/_base/main.py
	couchpotato/core/providers/torrent/yify/main.py