Summary:
Fix specs
Fix responding to mailto, files at launch
It's super important that `window:loaded` is /not/ sent from index.js because `loadSettings.bootstrapScript` is async and nothing is actually loaded yet. This was causing the app to dispatch the mailto:// links into the main window before a DraftStore existed.
I think this was necessary at one point because we had NylasWindows not using a bootstrapScript? Should not be here anymore...
Test Plan: Run a few new tests
Reviewers: juan, evan
Reviewed By: evan
Differential Revision: https://phab.nylas.com/D2737