Use play ws' json api
Use play ws' json api

See https://www.playframework.com/documentation/2.2.x/ScalaWS#Submitting-JSON-data

Signed-off-by: Arthur Gautier <f88c5e35ba2b44ad8184caf58e04d88fd477a72f@gandi.net>

byxorna/collins,tumblr/collins,tumblr/collins,defect/collins,tumblr/collins,discordianfish/collins,defect/collins,discordianfish/collins,defect/collins,tumblr/collins,byxorna/collins,discordianfish/collins,byxorna/collins,tumblr/collins,byxorna/collins,defect/collins,byxorna/collins,defect/collins,byxorna/collins,discordianfish/collins,defect/collins,discordianfish/collins,discordianfish/collins,tumblr/collins