Tile Curated List component

Single large tile containing a curated list
Also fixed curated lists that were not displaying descriptions because the "if" statement was referencing content. instead of this.
Removing affordance
fix syntax of grid__item
markup tweak
Tile-CuratedList updates
Merge pull request #117 from CruGlobal/Tile-CuratedList

Tile curated list
Merge pull request #118 from CruGlobal/dev

Tile Curated List component