ApiJob view 'jobs' does not manage "no post data"
in ApiJob view jobs, the access to request.POST['job[webapp_id]'] raised uncaught exception if the key does not exist (~nothing is post).
This correction can be the occasion to rename the param 'job[webapp_id]' in webapp_id/app_id. It seems to be a legacy from rails code (according to @scampion ).
Also, I didn't check yet, but if needed (used elsewhere) make a helper function to get the app object given app_id or app_name.