Set calories target and show quota as circle in calendar view

[christianfl]

Hey! I think it would be a nice idea to implement a feature so you can easily see your daily calorie quota. My idea would include three little changes:

1. Include a settings pane in the drawer which leds to setting a template for a daily calorie target
2. Show a circle respectively a part of a circle in the calendar overview for each date which represents a percentage: (Total of input calories / daily target)
3. When tipping on a specific date in the calendar overview: Showing the calorie target under the total amout of calories that day and the possibility to change it. So that the setting in the settings pane is only a template for new dates and each day can manually be changed because changing the calorie target in the feature should not change the circle graphic.

What do you think about that?

Mockups (not pixel perfect, just that you can see what I mean)

1. A settings pane could be also useful for other features in the future

2. In this example with red lines < 50%, yellow over 50% and under 75% and green for > 75%

3. With current date in the header because there was much unused space

I hope it's understandable for the users here even though the UI is in german.

[christianfl]

Just referencing a newer mockup for (3) which integrates the total calories overview together with macronutritients with the help of progress bars (as some other user added a PR for initial macro support):

#61 (comment)