Roadmap shows GS labels openscholar/openscholar#3169

Added a text label to show the item's style.  Question, praise, and update all show up as-is.  Problem translates to bug and idea translates to feature (these are the ones I'm expecting to show up on the roadmap).

@dancabral, I made these labels with css's content property.  Maybe they could have nice looking icons instead?  Bug seems obvious, but I'm not sure how you'd show a feature.