CONN-1166 Direct Admin GUI not displayed if no DirectConfig

Configured AdminGui to not display direct if not connected to the DirectConfig.

Logic:  Doesn't show direct views if configDir url not found and if lookup on domains is unsuccessful (either by not returning any or by exception).

Includes:
- Does not render view for left menu bar for direct.
- Does not display direct page preferences for role admin.
- Can not directly navigate to direct page by entering in url.
- Also, no longer allows user to delete domain, if there is only 1 domain remaining (needs 1 active domain).