Legends need to use their individual text spacing - not use the Tick spacing. For vertical lists it looks a lot better to use a spacing of 10 instead of 20. Prior to this commit this couldn't be set in the defaults without also manipulating the axis tick spacing.
Using their own constant, this can be now easily configured.
The stroke length was just way too long, so I first tried to decrease the length by subtracting the padding from it, but it was not a big difference.
I ended up using a hardcoded value because it gave the best visual results on different resolutions.
Prior to this commit we simply defined a hardcoded padding. This commit respects the passed style and inherits from a default padding defined in legendDefaults.
