Draft for a clear contest script

Script clears calls, users, references and shadow calls from the
database to clean up after the last contest.

clear_contest.py

@@ -0,0 +1,28 @@
+#!/usr/bin/env python
+from __future__ import print_function
+
+import datetime
+
+# prepare environment
+import sys
+sys.path.append("..")
+import os
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "cqtu.settings")
+import django
+django.setup()
+
+confirm = raw_input("Do are you sure you want to clear all contest data? Answer with uppercase YES: ")
+
+if confirm != "YES":
+	print("Aborting")
+	sys.exit(1)
+
+
+from contest.models import QSO, ShadowCall, Reference, User
+
+print("{0} QSOs deleted".format(*QSO.objects.all().delete()))
+print("{0} ShadowCalls deleted".format(*ShadowCall.objects.all().delete()))
+print("{0} References deleted".format(*Reference.objects.all().delete()))
+print("{0} Users deleted".format(*User.objects.filter(is_superuser=0).delete()))
+print()
+print("Good to go!")