use stories layers
marker layer promise
mongabay layers
Merge branch 'refactor/layer-render' of github.com:Vizzuality/gfw into refactor/cblayers

* 'refactor/layer-render' of github.com:Vizzuality/gfw:
  layer rendering change, overlay class
markers
stories
Merge branch 'feature/refactor-june' of github.com:Vizzuality/gfw into refactor/cblayers

* 'feature/refactor-june' of github.com:Vizzuality/gfw:
  graymaptype lighter
resolve conflict