DisableJob function have a problem with Jobs inside folders

Hello,

If we have a Job inside a folder, EncodingUtils.encode(jobName) will transform backslash "/" character into "%2F" and thus job will not be found.

public void disableJob(String jobName, boolean crumbFlag) throws IOException {
client.post("/job/" + EncodingUtils.encode(jobName) + "/disable", crumbFlag);
}