Fixes stats rendering
Shows the more_data footer. Cleanup some code in dashboard.js
Adds new sprite
Adds more_data html to dashboard
Merge branch 'develop' of github.com:CartoDB/cartodb20 into develop

* 'develop' of github.com:CartoDB/cartodb20:
  adding a new private layer, turns visualization into private - fixes vizzuality/cartodb-management#2613
  Update geojson.geojson
  Refactor Table::Relator to use Visualization::Member#dependent? and #non_dependent?
  Implement Visualization::Member#dependent? and #non_dependent?
  implement Visualization::Member#single_data_layer?
  include bogus in Gemfile, for sensible fakes in tests
  fixed Vizzuality/cartodb-management#1727
  Fixes table spec
  removed console from one spec
  fixed new_layer_dilaog specs and privacy selector