Also many LinkManager API changes to further isolate all link
management inside LinkManager.

Also turn them back on

These tests that make direct calls into the tool bar need to be updated.

- Updated MainWindowTest to catch this problem
- Also implemented initial pass at SetupView unit test

- Updated MainWindowTest to catch this problem
- Also implemented initial pass at SetupView unit test

Now works for more than Serial links

Simple starting point to view testing

Allows for UI unit tests to be written:
- Ability to respond to expected message boxes
- Ability to fail test if unexpected message boxes occurs

Used for unit testing