add some error handling to utility scripts

utility-scripts/create_groups.py

@@ -10,7 +10,12 @@ import os, sys, string, re
 
 sys.path.append(os.path.abspath('.'))
 os.environ['DJANGO_SETTINGS_MODULE'] = 'lms.envs.dev'
-from lms.envs.dev import *
+
+try:
+    from lms.envs.dev import *
+except Exception as err:
+    print "Run this script from the top-level mitx directory (mitx_all/mitx), not a subdirectory."
+    sys.exit(-1)
 
 from django.conf import settings
 from django.contrib.auth.models import User, Group

utility-scripts/create_user.py

@@ -14,7 +14,12 @@ import readline
 
 sys.path.append(os.path.abspath('.'))
 os.environ['DJANGO_SETTINGS_MODULE'] = 'lms.envs.dev'
-from lms.envs.dev import *
+
+try:
+    from lms.envs.dev import *
+except Exception as err:
+    print "Run this script from the top-level mitx directory (mitx_all/mitx), not a subdirectory."
+    sys.exit(-1)
 
 from student.models import UserProfile, Registration
 from external_auth.models import ExternalAuthMap