Meals - Goal Calories

[Kate-v2]

As a USER, When I visit the Meal Page,

• [x] I see a field listing the goal calories for that meal.
• [ ] I can interact with this field,
  • [ ] increase it
  • [ ] decrease it
• [ ] and it won't affect previous days
• [ ] and it will be the new default goal for future days
• [ ] and my calorie statistics for the meal will reflect the change
• [ ] and my calorie statistics for the day will reflect the change
• [ ] and this field will not affect the other meals

[Kate-v2]

We should store goals on a daily basis, so that changing the goal will not ruin previous statistics.

Ideas:

• store the goal every day with the meal
• store the goal with a start / end period