bug/char_sheets

[_$=0]

Causes a js error.

...and checkbox alignment

My OCD thanks you ☺️

I don't know what I am doing wrong (probably 'not looking hard enough at the documentation':) but `A` displays as 'A' here, and as 'A0' on staging.

I am not sure what (variable?) has to do with checkboxes. Maybe a full (stub of a) sheet would help the testers?

[_a=1]
[_$=0]
[_$=a]

The problem occurs at the second line (calculation of 0). A JS error is thrown and the last line isn't executed.

It's not really anything to do with checkboxes but they were both one line fixes for char sheets, so I grouped them into a bug/char_sheets branch. There might be other bugs too, so this is just a general fix branch for tiny changes.

On current those three lines display only the the clickable '1', on staging I get that, and also '0' and '1'.

This looks correct to me, based on my limited understanding of what the variable lookups do.

Also: