Add invisible bookings that do not affect the categories chart

[misteu]

What:

I think it might be useful to have "invisible" bookings that are considered in the calculation of the budget but do not appear in the chart of categories.

Why:

If you do not start at zero (because you want to align the sum to the current account value) you have to add some "correction" booking, e.g. for starting at -500. The same is true for when you missed or do not care about some bookings but want to correct it with one single invisible booking.

What I'm currently doing is adding these correction bookings to a separate group. However, this will affect the scaling of the chart more or less severe depending on the impact of this correction bookings value.

How:

I think a checkbox you could set inside of a category would be nice, e.g "don't show as category".