[improvement] conditional shape for using mixin instead of list.
[fix] split-button after adding conditional shape.
[fix] button group, split button include buttons vars for btn global naming rules.
[fix] table header color.
[fix] change copyright to NRD.
[fix] remove double import media.
[improvement] comments on rendered unminified CSS.

[improvement] conditional shape for using mixin instead of list.
[fix] split-button after adding conditional shape.
[fix] button group, split button include buttons vars for btn global naming rules.
[fix] table header color.
[fix] change copyright to NRD.
[fix] remove double import media.
[improvement] comments on rendered unminified CSS.

Signed-off-by: Bravocado <bravocado.project@gmail.com>