detect non-ISO dates in JSON and from user and fix

parsers/imports.py

@@ -27,7 +27,7 @@ def import_people():
         troggle.parsers.people.load_people_expos()
 
 def import_surveyscans():
-    print("-- Importing Survey Scans")
+    print("-- Importing Survey Scans and Wallets")
     with transaction.atomic():
         troggle.parsers.scans.load_all_scans()
 

parsers/scans.py

@@ -38,6 +38,7 @@ def load_all_scans():
     Wallet.objects.all().delete()
     print("  - deleting all Wallet and SingleScan objects")
     DataIssue.objects.filter(parser="scans").delete()
+    DataIssue.objects.filter(parser="wallets").delete()
 
     # These are valid old file types to be visible, they are not necessarily allowed to be uploaded to a new wallet.
     valids = [