Moves Status to it's own file

This way only qmonitor and qinfo need Curses and you can still run the cluster without it.

django_q/__init__.py

@@ -7,7 +7,7 @@ sys.path.insert(0, myPath)
 from .tasks import async, schedule, result, result_group, fetch, fetch_group, count_group, delete_group, queue_size
 from .models import Task, Schedule, Success, Failure
 from .cluster import Cluster
-from .monitor import Stat
+from .status import Stat
 
 VERSION = (0, 5, 3)