[svn] Renaming troggle.expo to troggle.core. To do this, used:

perl -p -i -e "s/expo(?=[\s\.']+)/core/g" `find -name \*.py`

and then manually checked each change (had to remove a couple)

export/tocavetab.py

@@ -1,4 +1,4 @@
-import troggle.expo.models as models
+import troggle.core.models as models
 from django.conf import settings
 
 import csv, re, os