Removed sectioned grid layout manager
Added span to the gridItem and built the gridViewHolder ready to be extended by other grid views
Fixes to make the rest of the item views support the extra grid view implementation
Made the GridViews extend the new GridViewHolder class rather than the ViewHolder class
Merge branch 'feature/grid-sections' into develop

* feature/grid-sections:
  Made the GridViews extend the new GridViewHolder class rather than the ViewHolder class
  Fixes to make the rest of the item views support the extra grid view implementation
  Added span to the gridItem and built the gridViewHolder ready to be extended by other grid views
  Removed sectioned grid layout manager