Moved a migration after the master migrations.

diff --git a/philo/migrations/0015_auto__chg_field_node_view_object_id__chg_field_node_view_content_type.py b/philo/migrations/0018_auto__chg_field_node_view_object_id__chg_field_node_view_content_type.py
similarity index 100%
rename from philo/migrations/0015_auto__chg_field_node_view_object_id__chg_field_node_view_content_type.py
rename to philo/migrations/0018_auto__chg_field_node_view_object_id__chg_field_node_view_content_type.py