Have the runtime check in a loop to see if the app server is up before

opening the browser window.

runtime/pgAdmin4.h

@@ -28,4 +28,8 @@
 // Application name
 const QString PGA_APP_NAME = QString("pgAdmin 4");
 
+// Global function prototypes
+int main(int argc, char * argv[]);
+bool PingServer(QUrl url);
+
 #endif // PGADMIN4_H