Add missing jsonpCallbackParam option in angular externs
Add missing jsonpCallbackParam option in angular externs

This option was added in version 1.6, see:
  https://docs.angularjs.org/guide/migration#migrate1.5to1.6-ng-services-$http

anomaly/closure-compiler,nawawi/closure-compiler,brad4d/closure-compiler,tiobe/closure-compiler,MatrixFrog/closure-compiler,GerHobbelt/closure-compiler,vobruba-martin/closure-compiler,MatrixFrog/closure-compiler,tiobe/closure-compiler,ChadKillingsworth/closure-compiler,Yannic/closure-compiler,google/closure-compiler,tiobe/closure-compiler,vobruba-martin/closure-compiler,Yannic/closure-compiler,ChadKillingsworth/closure-compiler,tdelmas/closure-compiler,google/closure-compiler,Yannic/closure-compiler,shantanusharma/closure-compiler,monetate/closure-compiler,ChadKillingsworth/closure-compiler,monetate/closure-compiler,shantanusharma/closure-compiler,nawawi/closure-compiler,shantanusharma/closure-compiler,brad4d/closure-compiler,vobruba-martin/closure-compiler,GerHobbelt/closure-compiler,mprobst/closure-compiler,monetate/closure-compiler,tdelmas/closure-compiler,tdelmas/closure-compiler,tiobe/closure-compiler,google/closure-compiler,MatrixFrog/closure-compiler,GerHobbelt/closure-compiler,vobruba-martin/closure-compiler,mprobst/closure-compiler,ChadKillingsworth/closure-compiler,MatrixFrog/closure-compiler,brad4d/closure-compiler,mprobst/closure-compiler,anomaly/closure-compiler,shantanusharma/closure-compiler,Yannic/closure-compiler,monetate/closure-compiler,nawawi/closure-compiler,anomaly/closure-compiler,GerHobbelt/closure-compiler,google/closure-compiler,mprobst/closure-compiler,anomaly/closure-compiler,nawawi/closure-compiler,tdelmas/closure-compiler