Fix a typing error in PageRouterOutlet. global isn't of type any anymore.

Author: hdeshev

src/nativescript-angular/router/page-router-outlet.ts

@@ -279,7 +279,7 @@ class PageShim implements OnActivate, OnDeactivate {
                                     resolve()
                                 });
 
-                                page.on('navigatingFrom', global.zone.bind((args: NavigatedData) => {
+                                page.on('navigatingFrom', (<any>global).zone.bind((args: NavigatedData) => {
                                     if (args.isBackNavigation) {
                                         startGoBack();
                                         this.locationStrategy.back();
@@ -313,4 +313,4 @@ class PageShim implements OnActivate, OnDeactivate {
     private log(methodName: string) {
         log("PageShim(" + this.id + ")." + methodName)
     }
-}
+}