Remove any In-Progress Features from Stable Version of User Interface

[brettpalmberg]

@KevinJJackson - can you help create a version of the user interface with any incomplete features removed? Please feel free to remove anything else you see that's not quite ready for stable or is not implemented end-to-end yet. List to include at least the removal of the following UI elements.

• Landing Page District/Division Selector
• Instrument Manager Alerts Tab
• Instrument Manager Formula Editor Tab
• Instrument Manager Chart Tab

This is what will be deployed to stable

[KevinJJackson]

Yep, I'll start with the above list and see if there is anything else that can be removed

[KevinJJackson]

@brettpalmberg Created stable branch with the above features as well as the Cross Section portion on the Batch Plotting screen removed using some feature flags.

https://github.com/USACE/instrumentation-ui/tree/stable

Let me know if there is anything else that can be removed.

Current list of feature flags:

REACT_APP_DISTRICT_SELECTOR
REACT_APP_ALERT_EDITOR
REACT_APP_FORMULA_EDITOR
REACT_APP_INSTRUMENT_CHART
REACT_APP_CROSS_SECTION

Since these are all undefined, they evaluate to false even if they are not in the build command yet. If we ever wanted to turn these back on without a code change, we'd just need to set these values to true in the build command.

[KevinJJackson]

Marking this as closed, feature flags can now be tracked here: https://github.com/USACE/instrumentation-ui/blob/new-develop/.github/workflows/develop.yml