CSS: Add `tab-size`
CSS: Add `tab-size`

This makes sure any tab characters in the source code don’t take up too much horizontal space in reports.
alihalabyah/istanbul,fermads/istanbul,rolka/istanbul,mikeyoon/istanbul,shaicantor/sl-node-cover,tamtakoe/istanbul,nagyistoce/istanbul,rtsao/babel-istanbul,kpdecker/istanbul,ambitioninc/babel-istanbul,joeegan/istanbul,technicallyfeasible/istanbul,kitsonk/istanbul,technicallyfeasible/istanbul,adamjmcgrath/istanbul,gotwarlost/istanbul,chrisj/istanbul,sterling/istanbul,chrisj/istanbul,sterling/istanbul,RubaXa/babel-istanbul,kittens/istanbul,bcoe/istanbul,douglasduteil/istanbul,kyroskoh/istanbul,douglasduteil/istanbul,rtsao/babel-istanbul,kitsonk/istanbul,RubaXa/babel-istanbul,alihalabyah/istanbul,ambitioninc/babel-istanbul,tamtakoe/istanbul,fermads/istanbul,realtymaps/istanbul,blakeembrey/istanbul,gtanner/istanbul,jedmao/istanbul,omsmith/istanbul,realtymaps/istanbul,nagyistoce/istanbul,realtymaps/istanbul,gtanner/istanbul,trifacta/istanbul,GalenWarren/babel-istanbul,kyroskoh/istanbul,camsong/istanbul-flow,jedmao/istanbul,slonoed/babel-istanbul,asa-git/istanbul,mikeyoon/istanbul,adamjmcgrath/istanbul,ambitioninc/babel-istanbul,ezequiel/experimental-istanbul,gotwarlost/istanbul,dhoko/istanbul,asa-git/istanbul,mikeyoon/istanbul,pegurnee/istanbul,dhoko/istanbul,popomore/istanbul,pegurnee/istanbul,0111001101111010/istanbul,slonoed/babel-istanbul,simpletrain/istanbul,alihalabyah/istanbul,fermads/istanbul,douglasduteil/istanbul,slonoed/babel-istanbul,rtsao/babel-istanbul,GalenWarren/babel-istanbul,nagyistoce/istanbul,ezequiel/experimental-istanbul,Eric013/istanbul,alonweiss-sl/sl-node-cover,bcoe/istanbul,0111001101111010/istanbul,camsong/istanbul-flow,sebmck/istanbul,dhoko/istanbul,GalenWarren/babel-istanbul,bcoe/istanbul,tamtakoe/istanbul,asa-git/istanbul,blakeembrey/istanbul,abstractj/istanbul,jedmao/istanbul,simpletrain/istanbul,sebmck/istanbul,gtanner/istanbul,adamjmcgrath/istanbul,ezequiel/experimental-istanbul,joeegan/istanbul,gotwarlost/istanbul,sterling/istanbul,shaicantor/sl-node-cover,kpdecker/istanbul,blakeembrey/istanbul,chrisj/istanbul,alonweiss-sl/sl-node-cover,rolka/istanbul,joeegan/istanbul,Eric013/istanbul,kriskowal/istanbul,RubaXa/babel-istanbul,trifacta/istanbul,omsmith/istanbul,trifacta/istanbul,pegurnee/istanbul,popomore/istanbul,abstractj/istanbul,kittens/istanbul,kriskowal/istanbul,alonweiss-sl/sl-node-cover,sebmck/istanbul,rolka/istanbul,kpdecker/istanbul,simpletrain/istanbul,abstractj/istanbul,Eric013/istanbul,kitsonk/istanbul,kittens/istanbul,omsmith/istanbul,shaicantor/sl-node-cover,kyroskoh/istanbul,camsong/istanbul-flow,technicallyfeasible/istanbul