Grafana dashboard cleanup

[nickembrey]

After reviewing the changes I recently made that were merged in PR #20, I found a number of things that still need to be changed, updated, or organized:

• A few Battery Pack 1 parameters are missing.
• Some parameters added to the dashboard no longer exist.
• Min/max values should make a panel display red when violated.
• A default threshold of 80 causes many panels to display red even when value is not out of range for the parameter.
• Panels are badly organized within rows.
• Naming is sometimes unstandardized, ugly, or unclear.

All this stuff needs to be cleaned up.

[nickembrey]

This work is live in flatnogs.oresat.org, so I'm closing the issue for now. A new issue will be created when there are changes significant enough to warrant a merge into master.