fix page view insertions for cassandra on rails 3

Change-Id: Id8a1c3fad26fbd6cf7bb76dbe89e862d0da11540
Reviewed-on: https://gerrit.instructure.com/30106
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Brian Palmer <brianp@instructure.com>
Product-Review: Cody Cutrer <cody@instructure.com>
QA-Review: Cody Cutrer <cody@instructure.com>