WDFN 580 present operational limits

Before making a pull request

• Run all linters (make lint)
• Run all tests (make test)
• Update the changelog appropriately

Description

This is an overview of the actions

• grabs all the threshold information for the site number from Sensor Things
• pulls out the desired thresholds, in this case Operational limits (but can pull out any at this point)
• adds the thresholds to the state
• when the graph draws, it checks the state to see if any thresholds match the parameter and parameter description
• pulls out the desired thresholds in range of the y axis (in this case operating limits are selected, but again this could work for any threshold
• uses the threshold 'in range' to graph all the needed threshold lines when needed
• uses the thresholds 'in range' to create the legend 'markers' only when needed

After making a pull request

• If appropriate, put the link to the PR in the JIRA ticket
• Assign someone to review unless the change is trivial