* AzureMonitor: Hide Application Insights and Insights Analytics for panels not using them
* AzureMonitor: Hide Application Insights config
* simplify
* fix test
* Convert credentials form to a functional component
* Encapsulation of Azure credentials logic
* Fix selection of subscriptions
* Load subscriptions on init and save options only if they're unsaved
* Functions for resolution of routes
* Resolve routes of all API requests
* Reset default value if not found anymore
* Fix tests
* Symbol to conceal secret