[patch] Fix NoSuchCatalogError handling in developer mode

[durera]

Fixes an issue in the CLI in developer mode where the getCatalog function in mas-devops was changed to raise a NoSuchCatalogError instead of returning None.

Also adds four --dev-mode unit tests:

• No catalog installed (interactive mode)
• No catalog installed (non-interactive mode)
• Master catalog already installed (interactive mode without --dev-mode flag)
• Master catalog already installed (interactive mode with --dev-mode flag)

Also fixes an issue where self.interactiveMode was being used as both a boolean property and a function name. The boolean property is now isInteractiveMode.