* fix language; active not bold
* keep seperate design for language and register

* fix footer, fix link to savedList, SCSS FIXME
* fix offcanvas-toggler in orders, profile and history
* change red, adapt type of slider, fix order of search controls
* restore facet
* restore styling for tabs
* fix quickfilter
* fix color for filter
* fix advanced search padding
* fix close offcanvas and register checkbox
* fix checkbox height

* removes finc variable imports and adds comment in customVariables
* re-defines BS dimensions in customVariables to prevent grunt errors

co-authored by: Claas Kazzer <kazzer@uni-leipzig.de>
* SCSS revision
* adds (mostly) SCSS linter improvements