Adds password_protected view
Adds password protected icons
Restricts the stylesheet to just the embed
Changes the input field type to password
Merge branch 'privacy-maps' of github.com:CartoDB/cartodb into privacy-maps

* 'privacy-maps' of github.com:CartoDB/cartodb:
  CDB-1688 Almost there with integration tests of torque layers. Code flow ready, pending checking returned vizjson