added future imports

accounts/doctype/journal_voucher/test_journal_voucher.py

@@ -16,6 +16,7 @@
 
 # Please edit this list and import only required elements
 
+from __future__ import unicode_literals
 import unittest
 import webnotes
 import webnotes.model

accounts/page/voucher_import_tool/__init__.py

@@ -0,0 +1 @@
+from __future__ import unicode_literals

accounts/page/voucher_import_tool/voucher_import_tool.py

@@ -1,3 +1,4 @@
+from __future__ import unicode_literals
 import webnotes
 from webnotes.utils import formatdate