layerspec
New behaviour with LayerSpecService and PlaceService
layerspecs and urls working
almost done in this branch
Merge branch 'feature/refactor-june' of https://github.com/Vizzuality/gfw into refactor/place-update-urls
jshint fix
Merge pull request #625 from Vizzuality/refactor/place-update-urls

LayerSpec & Urls.