Add UI/code to make process of add/removing vehicles work.

src/main.cpp

@@ -72,6 +72,7 @@ Q_DECL_EXPORT int main(int argc, char *argv[])
     
     SqlVehicle vehicles(nullptr, db);
     SqlServiceRecord records(nullptr, db);
+    //Fill model with inital data.
     vehicles.select();
     records.select();