Added $setValidity() method to IFormController.
IWindowService, IBrowserService and IRouteParamsService now all have a [key: string]: any declaration, so that code like $window['someProperty'] is allowed to compile.
Fixed $setValidity() signature (thanx Basarat)
Merge pull request #2337 from rolandzwaga/angular

Some small additions to angular.d.ts and angular-route.d.ts