Button dropdowns – reuse List Groups module (incl. Switches)

[jonnystening]

Buttons & List Groups
Inside a Button Dropdown there is a pattern which is very similar to the List Groups module; it would make sense to leverage some reuse here. Nb. Horizontal padding differs for each use case and this will need to be considered.

Switches
Switches are currently not optimised for use in Dropdowns (only Radios and Checkboxes are). Switches would be adjusted to cater for switch text inside the module, rather than outside. That way they will render similar to Checkboxes.