Implement 2nd missing sass pipeline

Fixes #6905

src/Gulpfile.js

@@ -149,6 +149,9 @@ function buildCssPipeline(assetGroup, doConcat, doRebuild) {
                 }))))
         .pipe(plumber())
         .pipe(gulpif("*.less", less()))
+        .pipe(gulpif("*.scss", sass({
+        	precision: 10
+        })))
         .pipe(gulpif(doConcat, concat(assetGroup.outputFileName)))
         .pipe(cssnano({
             autoprefixer: { browsers: ["last 2 versions"] },