Columns not getting "col-auto"-class

[snake-soft]

If I write "auto", some other text or nothing in the column size fields in structure mode it's the same behaviour:
In the Structure mode the Column is called "Column (auto)" but the html element is not getting the class "col-auto".

The only way i can center column content was to choose "leer" (empty) as column type, what means that the element gets not any col class.

The source of that is the model "Bootstrap4GridColumn" and its method "get_grid_values".
The method iterates over all the choices generated at the bottom of bootstrap4_grid.models.py and there are no col-auto entries.
Those dynamically generated model fields are Integers and therefore it's not possible to save values like 'auto'.

I would suggest to add a "auto" boolean for each grid size.

[crydotsnake]

Do you still have the issue?

[fsbraun]

@snake-soft I have a proposal for the UI to allow for auto columns here: #127 (comment) I'd love to hear your input!