Migrated the final cronjobs over to tasks

eve_proxy/tasks.py

@@ -0,0 +1,12 @@
+import logging
+from datetime import datetime, timedelta
+from celery.decorators import task
+from eve_proxy.models import CachedDocument
+
+@task(ignore_result=True)
+def clear_stale_cache(cache_extension=0):
+    log = clear_stale_cache.get_logger()
+
+    time = datetime.utcnow() - timedelta(seconds=cache_extension)
+    objs = CachedDocument.objects.filter(cached_until__lt=datetime.utcnow()).delete()
+    self.log.info('Removed %s stale cache documents' % objs.count())