Correctly sort recommendations based on score
Correctly sort recommendations based on score

This is a breaking change, as methods such as `recommended_books` will
no longer be chainable with other ORM query methods.

Signed-off-by: David Celis <b1c1d8736f20db3fb6c1c66bb1455ed43909f0d8@davidcel.is>

balmbees/recommendable,davidcelis/recommendable,mikesmayer/recommendable,AndyObtiva/recommendable