- Adding Food completed

- User can now manually add food items.
- food.html.erb now under food_items folder instead of users.
- routes changed to reflect this
- navbar foods link changed to reflect this
- users controller no longer has “food” def
- FoodItemsController update function created
- FoodItemsController food_item_from_params function created
- FoodItemsController new/food functions created, they do the same
thing but for some reason loves calling the food function.