Adds new route and public_tables page
Adds table styles
Adds real data
Adds more data and some sprites
Refreshes sprites
Improves mixins
Adds table html and css
Improves mixins (adds base colors and more methods)
Merge branch 'p2' into develop

* p2:
  Improves mixins (adds base colors and more methods)
  Adds table html and css
  Improves mixins
  Refreshes sprites
  Adds more data and some sprites
  Adds real data
  Adds table styles
  Adds new route and public_tables page
Merge branch 'develop' of github.com:CartoDB/cartodb20 into develop

* 'develop' of github.com:CartoDB/cartodb20:
  added composite operations to wizards
  added composite operations to wizards
  removed memory leaks
  Fixes the missing prj error on the importer
Adds public_tables page
Refreshes sprites