Fix update when there are Jenkins template jobs in the view

The Jenkins template jobs do not have the same json serialization, and are missing a "status" given by the color attribute.

The following error occurs when such a job is added to the view used by the report (and other updates are not available)

net.sf.json.JSONException: JSONObject["color"] not found.
	at net.sf.json.JSONObject.getString(JSONObject.java:2092)
	at com.nuxeo.intranet.jenkins.web.JenkinsJsonConverter.convertJobs(JenkinsJsonConverter.java:63)

Workaround: filter template jobs from the report view (exclude jobs on criterion "job type", values "job template" and "auxiliary template")