feat(dev): eslint and stylelint on dev, improvements, cleanup

src/scss/_mixins.scss

@@ -32,6 +32,7 @@
   @each $theme, $map in $themes {
     .#{$theme} & {
       $theme-map: () !global;
+
       @each $key, $submap in $map {
         $value: map-get(map-get($themes, $theme), '#{$key}');
         $theme-map: map-merge(

src/scss/_variables.scss

@@ -127,6 +127,7 @@ $themes: (
 
     .backTitle {
       cursor: pointer;
+
       @include themed {
         color: t($subColor);