Make scheduler run every hour to catch edge cases

[courtneyfay]

Acceptance criteria:

• Scheduler should run every hour (or at least, more often than once a day) to catch edge cases where someone might sign up for a case that is taking place the next day

[NathanWEdwards]

Currently,

After the application sends out notifications for a docket id's court session, when a reminder document is created from a user subscribing to receive notifications on a docket id that has an upcoming court session taking place the following day, then the reminder document will remain in an active state until a matching docket id is found and processed by the send-reminders script to update reminder documents.

It would be nice if the scheduler ran up until the start of a court session to catch conditions when reminders documents would otherwise remain active, indefinitely.