URL is broken when navigating to page with query params

[ptanov]

do not search if state is chaning...

[ptanov]

            $scope.$watchCollection(function() {return $state.params;}, urlToFilter);

is invoked before scope is destroyed when changing state...

[ptanov]

this is related to
angular-ui/ui-router#2614
so until ui-router 0.2.19 release - we must use version 0.2.15