Fix bug with create job

Problem was so: if you create new job and not set interval - periodic task will be created along

esi/scraper/views.py

@@ -77,9 +77,10 @@ class NewJobCreateView(CreateView):
         query = request.POST.get('query')
         job = Job.objects.create(name=name, spider=spider, query=query)
         interval = request.POST.get('interval')
-        every = request.POST.get('count')
-        every = int(every) if every else None
-        job.schedule_job = make_periodic_task(job.id, schedule(interval, every))
+        if interval:
+            every = request.POST.get('count')
+            every = int(every) if every else None
+            job.schedule_job = make_periodic_task(job.id, schedule(interval, every))
         job.save()
 
         return HttpResponseRedirect(reverse('job_list'))