updating css parser to fix bugs
updating css parser to fix bugs

@rev goliver@ async
@bug W-1935059@
@bug W-1935163@
@bug W-1935763@

igor-sfdc/aura,forcedotcom/aura,badlogicmanpreet/aura,DebalinaDey/AuraDevelopDeb,igor-sfdc/aura,forcedotcom/aura,forcedotcom/aura,lcnbala/aura,lcnbala/aura,forcedotcom/aura,igor-sfdc/aura,madmax983/aura,badlogicmanpreet/aura,madmax983/aura,DebalinaDey/AuraDevelopDeb,lcnbala/aura,navyliu/aura,badlogicmanpreet/aura,navyliu/aura,lhong375/aura,SalesforceSFDC/aura,DebalinaDey/AuraDevelopDeb,TribeMedia/aura,igor-sfdc/aura,DebalinaDey/AuraDevelopDeb,forcedotcom/aura,madmax983/aura,DebalinaDey/AuraDevelopDeb,TribeMedia/aura,badlogicmanpreet/aura,badlogicmanpreet/aura,madmax983/aura,lcnbala/aura,lhong375/aura,madmax983/aura,lhong375/aura,TribeMedia/aura,TribeMedia/aura,lcnbala/aura,DebalinaDey/AuraDevelopDeb,madmax983/aura,lcnbala/aura,SalesforceSFDC/aura,navyliu/aura,navyliu/aura,igor-sfdc/aura,navyliu/aura,SalesforceSFDC/aura,navyliu/aura,SalesforceSFDC/aura,TribeMedia/aura,badlogicmanpreet/aura,SalesforceSFDC/aura,SalesforceSFDC/aura,lhong375/aura,TribeMedia/aura