Modificadas vistas para usar variables

app/src/main/java/com/cesanelli/lajusta/MainActivity.java

...rc/main/java/com/cesanelli/lajusta/io/models/Product.java

app/src/main/java/com/cesanelli/lajusta/ui/CartFragment.java

...ava/com/cesanelli/lajusta/ui/CartRecyclerViewAdapter.java

...c/main/java/com/cesanelli/lajusta/ui/ProductFragment.java

.../main/java/com/cesanelli/lajusta/ui/ProductsFragment.java

...com/cesanelli/lajusta/ui/ProductsRecyclerViewAdapter.java

...ava/com/cesanelli/lajusta/ui/viewmodel/CartViewModel.java

.../cesanelli/lajusta/ui/viewmodel/ProductListViewModel.java

app/src/main/res/drawable-v24/ic_launcher_foreground.xml

app/src/main/res/drawable/ic_baseline_add_24.xml

app/src/main/res/drawable/ic_baseline_delete_24.xml

app/src/main/res/drawable/ic_baseline_remove_24.xml

app/src/main/res/drawable/ic_baseline_shopping_cart_24.xml

app/src/main/res/drawable/ic_la_justa_vector.xml

app/src/main/res/drawable/ic_menu_camera.xml

app/src/main/res/drawable/ic_menu_slideshow.xml

app/src/main/res/layout/fragment_cart.xml

app/src/main/res/layout/fragment_cart_list.xml

app/src/main/res/layout/fragment_producer.xml