populate one-to-many

fixed bug where filters of the same type where prepopulated with
previous filters data
Merge branch 'feature' of https://github.com/ten24/Slatwall into feature-many-to-one-population
remove comment
Added in getSimpleRepresentation override method to shippingMethodRate
Merge pull request #2609 from ten24/feature-many-to-one-population

Feature many to one population
Merge pull request #2610 from ten24/feature-shippingMethodRateSimpRep

Added in getSimpleRepresentation override method to shippingMethodRate
Merge branch 'develop' into feature
Updated Version 3.5.008.013