Fixed most module cyclic references. There is one left for ios and android: (#4978)

- http -> http-request -> image-source
that can't be fixed easily and will be removed once we delete image-source module because it is obsolete anyway.
There is one more for android:
- frame -> fragment that could be removed if we use global object.
Updated madge bersion

tns-core-modules/application/application-common.ts

@@ -19,6 +19,8 @@ export { Observable };
 
 import { UnhandledErrorEventData, iOSApplication, AndroidApplication, CssChangedEventData, LoadAppCSSEventData } from ".";
 
+export { UnhandledErrorEventData, CssChangedEventData, LoadAppCSSEventData };
+
 export const launchEvent = "launch";
 export const suspendEvent = "suspend";
 export const displayedEvent = "displayed";
@@ -54,7 +56,11 @@ export function setApplication(instance: iOSApplication | AndroidApplication): v
 }
 
 export function livesync() {
-    events.notify(<EventData>{ eventName: "livesync", object: app });  
+    events.notify(<EventData>{ eventName: "livesync", object: app });
+    const liveSyncCore = global.__onLiveSyncCore;
+    if (liveSyncCore) {
+        liveSyncCore();
+    }
 }
 
 export function setCssFileName(cssFileName: string) {
@@ -76,4 +82,4 @@ export function addCss(cssText: string): void {
 
 global.__onUncaughtError = function (error: NativeScriptError) {
     events.notify(<UnhandledErrorEventData>{ eventName: uncaughtErrorEvent, object: app, android: error, ios: error, error: error });
-}
+}