Calendar block sometimes not loading/updating when schedule turns it back on

[Dan-Peck]

When applying a schedule to a calendar block, and the Screen goes through a full refresh cycle while the block is off, the calendar block will display "Loading calendar..." for up to 30 minutes before refreshing its content.

To avoid this, consider adding an immediate calendar block refresh as the schedule turns it back on.

Workarounds in the meantime:

• Provide 15-30 minutes of lead-time to the schedule "on" time and wait for the refresh.
• Login to the DAKboard account, and click the Screen Refresh button.
• Recycle the power to the DAKboard device after the "on" time has occurred.

[Dan-Peck]

Merged in @ b38af70 and added to the queue for upcoming release to the live site.