moved breakpoints, gutter to settings.scss
deleting clear fix, and moving state styles (is-hidden, is-visible, is-visuallyhidden, )
deleting not needed variables for colors,
deleting not needed colours by context
Merge branch 'master' of github.com:neno/navigator-3-frontend into jan_css_settings

Conflicts:
	source/css/_0.settings.scss
	source/modules/nav/nav_main/_nav_main.scss