No sexy exposed filters after update alpha2 -> beta1

Hey

I updated the sexy exposed module from alpha2 to beta1. After the update, all of my sexy exposed filters lost their sexyness... This is because the sexy_number form item is introduced (and used) in beta1 but you have to resubmit all filters in order to fill "$options['expose']['sexy_number']". If not, this will return NULL instead of 0 and this will break the functionality.

I attached a patch to fix this (against beta1).

Greetz!