Adds loader
Removes the border-bottom when the view_all link is active
Merge branch 'develop' of github.com:CartoDB/cartodb20 into develop

* 'develop' of github.com:CartoDB/cartodb20:
  Full vizjson url on embed map
  fixes vizzuality/cartodb-management#2315 vizzuality/cartodb-management#2174
  replaced layers function to know how many cartodb layers there were in a map view
  cdb updated
  added function to layers collection to get layer type count + tests
  new cdb updated