addCookieSettingsButton() function name is misleading

[andreasblumberg]

  function addCookieSettingsButton() {

The function name is misleading as this function doesn't actually add a button but registers the click handler for it. IMO this doesn't necessarily needs to be in a dedicated function as it's invoked once. But we can leave it to move forward 👍

Originally posted by @fabianmarz in #50