Remove sass folder
Squashed 'src/sass/' content from commit 768ca5f

git-subtree-dir: src/sass
git-subtree-split: 768ca5f3e45b5af67e5d67bb96b123618e0267c2
Merge commit 'a8bc72806220cc3f1c0197c1b824f8aa128f769e' as 'src/sass'
Add git subtree reference to external sass repository