Allow plugins ability to augment the html displays?

[jonathan]

Awesome thanks, I've added that code to my version.

So, If you'd like I think the best way is to create two pull requests:
- SIP with the new capabilities and the updated proto plugin.
- sip_plugins adding diurnal_display and updating the proto plugin to match that in SIP.

If that isn't optimal let me know and I'll follow your lead!

-Jonathan