Review SCSS refactoring for to-be-deprecated Bourbon functions (#1959)

* [Frontend] Refactor SCSS to remove deprecated @includes

Fixes #1891
- In progress

* [Frontend] Refactor SCSS to remove deprecated @includes

Fixes #1891
Making bourbon happy by refactoring to-be-deprecated
calls to prefixing @includes:
- transform and related CSS;
- flex and related CSS;
- Fixed double semi-colons to single;

platform/commonUI/general/res/sass/user-environ/_frame.scss

@@ -142,7 +142,7 @@
         .l-hyperlink.s-button {
             .label {
                 @include ellipsize();
-                @include transform(translateY(-50%));
+                transform: translateY(-50%);
                 padding: 0 $interiorMargin;
                 position: absolute;
                 min-width: 0;