CLC-3846: fixes for failing Selenium tests

This fixes a number of minor issues that triggered false test failures.

1. Fixed the deep linking spec by waiting for a successful logout response from CalNet (test = authentication_deep_linking_spec).
2. The My Finances landing page test failed intermittently because there wasn't a sufficient wait time for the linked pages to load. So the test was checking the linked page titles before they appeared (test = my_finances_ui_landing_page_spec).
3. Added better logging for when the browser won't start up at all, which was necessary to diagnose the problem reported in CS-3647.
4. Changed the expected page title for one of the linked pages on my_finances_ui_landing_page_spec, since the page itself has changed.