No space after colon

[Feuermurmel]

With the default settings of PrettyPrint, there's not space after a colon in JSON objects, making them harder than necessary to read.

Example:

{
    "testerSettings":{ "verboseLogOutput":true, "sendSdpEnabled":true, "sendAudioEnabled":false, "storeReceivedAudioData":false, "reRegisterTime":600, "inviteHealthCheck":true, "minWaitingTime":360.0, "maxWaitTimeSeconds":120.0, "usedNetworkAddress":"10.100.202.108", "sendAudioFilename":"test.wav" },
    "jobSettings":{
        "jobType":"CALLEE",
        "testerAccount":{ "username":"ahatest*", "host":"ims-info.local", "port":"5090" },
        "targetAccount":{ "username":"aha", "host":"ims-info.local", "port":"5090" },
        "callerBehaviour":"INVITE_BYE_ONCE",
        "calleeBehavior":"WELL_BEHAVED",
        "numberOfClients":1,
        "numberOfConversations":1,
        "commandPerMinute":1000000,
        "conversationTime":1000000,
        "csvOutputEnabled":true,
        "logOutputPath":"logs/",
        "allCallerBehaviour":["REGISTER_SEQUENT", "REGISTER_RANDOM", "INVITE_BYE_ONCE", "INVITE_BYE_SEQUENT", "INVITE_BYE_RANDOM"],
        "allCalleeBehaviour":["WELL_BEHAVED", "RANDOM_FORGET_30_PERCENT_OF_INVITES", "RANDOM_FORGET_30_PERCENT_OF_BYES", "RANDOM_FORGET_30_PERCENT_OF_INVITE_BYES"]
    }
}