Merge branch 'KAT-50' into 'master'

rescueapp/lib/MyHomePage2.dart

rescueapp/lib/MyHomePage3.dart

rescueapp/lib/bloc_patient/patient_bloc.dart

rescueapp/lib/database/database_provide.dart

rescueapp/lib/events-patient/add_patient.dart

rescueapp/lib/events-patient/delete_patient.dart

rescueapp/lib/events-patient/patient_event.dart

rescueapp/lib/events-patient/set_patient.dart

rescueapp/lib/events-patient/update_patient.dart

rescueapp/lib/main.dart

rescueapp/lib/model-patient/patient.dart

rescueapp/pubspec.yaml