Hide ID Provider Buttons Based on Config from DMS Installer

[b-f-chan]

As an enhancement, it would be good to hide ID provider buttons based on config from the actual DMS Installer

If the DMS Admin has not setup a specific provider for their deployment, there is no purpose/use in displaying the login button for it

Solution Notes:

DMS will pass a comma-separated list of the configured IDP names to a specific environment variable for EGO-UI