Fixing subscribtion methods

...vprog/tutorial1/pricing/controller/PricingController.java

...c/ui/cs/advprog/tutorial1/pricing/core/AlphaAsuransi.java

...ac/ui/cs/advprog/tutorial1/pricing/core/BetaAsuransi.java

.../ac/ui/cs/advprog/tutorial1/pricing/core/GarudaKurir.java

...d/ac/ui/cs/advprog/tutorial1/pricing/core/KadalKurir.java

...id/ac/ui/cs/advprog/tutorial1/pricing/core/KudaKurir.java

...c/ui/cs/advprog/tutorial1/pricing/core/SigmaAsuransi.java

...advprog/tutorial1/pricing/service/PricingServiceImpl.java

.../id/ac/ui/cs/advprog/tutorial1/tracking/core/Courier.java

...ac/ui/cs/advprog/tutorial1/tracking/core/DragoHunter.java

...c/ui/cs/advprog/tutorial1/tracking/core/DragoMonitor.java

...id/ac/ui/cs/advprog/tutorial1/tracking/core/RoadUser.java

.../ui/cs/advprog/tutorial1/tracking/core/SweetsMonitor.java

...vprog/tutorial1/tracking/service/TrackingServiceImpl.java