Add Advanced Option to deactivate "Too early to search for ..."

https://github.com/RuudBurger/CouchPotatoServer/issues/1272

This is a problem with many not so big movies. I added a Advanced Option to deactivate this check. 

Since it's in the category Advanced "For those who know what they're doing" I don't see a problem to add this option. It's easier for people as to edit the python every time a update is loaded.

I set to default to the current, so the user has to deactivate the check once if he wants to.