Bumped cartodb.js to 3.15.12
Bumped cartodb.js to 3.15.12

CartoDB/cartodb,splashblot/dronedb,CartoDB/cartodb,CartoDB/cartodb,splashblot/dronedb,CartoDB/cartodb,splashblot/dronedb,splashblot/dronedb,CartoDB/cartodb,splashblot/dronedb