Refresh agent dashboard panel after create\update\delete operations (#1861)

* Edit alert WIP

* A couple alert edit bugs

* Hook up dashboard refresh notification

* Hook onchange event to other agent service calls

* Switch update handler to scalar value

* Add null check on handler callback

src/sql/workbench/api/node/mainThreadDataProtocol.ts

@@ -460,6 +460,11 @@ export class MainThreadDataProtocol implements MainThreadDataProtocolShape {
 		this._profilerService.onSessionStopped(response);
 	}
 
+	// SQL Server Agent handlers
+	public $onJobDataUpdated(handle: Number): void {
+		this._jobManagementService.fireOnDidChange();
+	}
+
 	public $unregisterProvider(handle: number): TPromise<any> {
 		let capabilitiesRegistration = this._capabilitiesRegistrations[handle];
 		if (capabilitiesRegistration) {