Moved the period parser from the accounting application to the Mia core application.

accounting/views.py

@@ -29,7 +29,7 @@ from django.views import generic
 from django.views.decorators.http import require_GET
 
 from accounting.models import Record
-from accounting.utils import PeriodParser
+from mia_core.period import PeriodParser
 from mia import settings
 from mia_core.digest_auth import digest_login_required
 from mia_core.utils import UrlBuilder, Pagination, \