* Remove old files
* Add SCSS pipeline
* Add generated files
* Fix navigation HTML
* Fix media queries
* Remove RTL
* Fix styling for big screens
* Remove separator configs
* Fix menu dropdown
* Add working mobile menu
* Fix menu item heights
* Update README
* mobile menu functional
* mobile menu beta
* edits mobile-menu: home link out, rtl ok, menu pop over
* mobile menu - bugs correction
* add horizontal separator
* corrections done + add configuration of centered or rtl/ltr mobile menu
* edit config of example
* separator padding full
Building the site fails if the menu is not defined in the config,
because the `header.html` references `.Site.Menus.main`. It can be made
optional by using the `with` helper.