[devtools] allow cross-origin requests for qunit
We have a mix of file:// html and http:// ajax calls. Which we should
at some point fix to all be http, but. Related to #4294727.
for table, column in [
('transactions', 'tx_time'),
('tx_entity_actions', 'tx_uuid'),
('tx_relation_actions', 'tx_uuid')]:
repo.system_source.create_index(session, table, column)
commit()