fix(filter): interpolated params w/ scope aren't possible starting AJS1.3

BREAKING CHANGE: Since filters are stateless and have no access to its scope anymore (see https://github.com/angular/angular.js/commit/8863b9d04c722b278fa93c5d66ad1e578ad6eb1f), a context must be given explicitly. This removes the feature of an interpolation based on the scope (context), even without the $rootScope.

However, the feature will still work in AJS <=1.2, so we won't remove it completely yet. Handle the feature as slightly deprecated.