[Sass] [SCSS] Add some tests for invalid CSS that we still want to support.
[Sass] [SCSS] Add some tests for invalid CSS that we still want to support.

antonifs/sass,ridixcr/sass,dylannnn/sass,sideci-sample/sideci-sample-haml,concord-consortium/haml,dg1dd1ngs/haml,haml/haml,tangposmarvin/sass,antonifs/sass,Galactix/sass,JuanitoFatas/sass,DanteKaris/sass,Industrys/sass,tangposmarvin/haml,schneems/sass,Anshdesire/sass,OrenBochman/sass,Iamronan/sass,Ahnita/sass,Galactix/sass,tangposmarvin/haml,Iamronan/sass,DanteKaris/sass,lmetla/sass,tenderlove/sass,rammy7219/sass,MetaAshley/sass,saper/sass,chriseppstein/haml,ridixcr/sass,Andrey-Pavlov/sass,uniba/hamldoc_ja,haml/haml,MetaAshley/sass,amatsuda/haml,StephanieMak/sass,zaru/sass,Nzaga/sass,Andrey-Pavlov/sass,briangonzalez/sass,danielfein/sass,Anshdesire/sass,HugoRLopes/sass,saper/sass,stewx/sass,Nzaga/sass,srawlins/sass,PMArtz92/sass,haml/haml,danielfein/sass,tangposmarvin/sass,PMArtz92/sass,keithpitty/haml,xzyfer/sass,stanhu/haml,srinivashappy/sass,askl56/sass,nickg33/sass,cmpereirasi/sass,Industrys/sass,cmpereirasi/sass,dylannnn/sass,srinivashappy/sass,keithpitty/haml,dg1dd1ngs/haml,hcatlin/sass,jaroot32/sass,macressler/haml,modulexcite/sass,askl56/sass,modulexcite/sass,liquidmetal/sass,amitsuroliya/sass,jaroot32/sass,liquidmetal/sass,schneems/sass,srawlins/sass,lmetla/sass,haml/haml,macressler/haml,xzyfer/sass,HugoRLopes/sass,zaru/sass,stewx/sass,chriseppstein/sass,nazar-pc/haml,nicklima/sass,amitsuroliya/sass,oss-practice/sass,StephanieMak/sass,JuanitoFatas/sass,hcatlin/sass,nicklima/sass,14113/sass,nickg33/sass,chriseppstein/haml,baiyanghese/sass,nazar-pc/haml,rammy7219/sass,Ahnita/sass,OrenBochman/sass,stanhu/haml