add sass/scratch.scss and associated sass files

Resources/public/sass/contrib/bourbon/addons/_prefixer.scss

@@ -0,0 +1,66 @@
+@charset "UTF-8";
+
+/// A mixin for generating vendor prefixes on non-standardized properties.
+///
+/// @param {String} $property
+///   Property to prefix
+///
+/// @param {*} $value
+///   Value to use
+///
+/// @param {List} $prefixes
+///   Prefixes to define
+///
+/// @example scss - Usage
+///   .element {
+///     @include prefixer(border-radius, 10px, webkit ms spec);
+///   }
+///
+/// @example css - CSS Output
+///   .element {
+///     -webkit-border-radius: 10px;
+///     -moz-border-radius: 10px;
+///     border-radius: 10px;
+///   }
+///
+/// @require {variable} $prefix-for-webkit
+/// @require {variable} $prefix-for-mozilla
+/// @require {variable} $prefix-for-microsoft
+/// @require {variable} $prefix-for-opera
+/// @require {variable} $prefix-for-spec
+
+@mixin prefixer($property, $value, $prefixes) {
+  @each $prefix in $prefixes {
+    @if $prefix == webkit {
+      @if $prefix-for-webkit {
+        -webkit-#{$property}: $value;
+      }
+    } @else if $prefix == moz {
+      @if $prefix-for-mozilla {
+        -moz-#{$property}: $value;
+      }
+    } @else if $prefix == ms {
+      @if $prefix-for-microsoft {
+        -ms-#{$property}: $value;
+      }
+    } @else if $prefix == o {
+      @if $prefix-for-opera {
+        -o-#{$property}: $value;
+      }
+    } @else if $prefix == spec {
+      @if $prefix-for-spec {
+        #{$property}: $value;
+      }
+    } @else  {
+      @warn "Unrecognized prefix: #{$prefix}";
+    }
+  }
+}
+
+@mixin disable-prefix-for-all() {
+  $prefix-for-webkit:    false !global;
+  $prefix-for-mozilla:   false !global;
+  $prefix-for-microsoft: false !global;
+  $prefix-for-opera:     false !global;
+  $prefix-for-spec:      false !global;
+}