Can't edit per/dialog settings

[Stevenic]

Describe the bug

If you try to click on a root dialog, within the design explorer, it always jumps you up to the root dialog. This means you have no way of changing the settings for a given dialog without editing the file directly.

Version

https://github.com/microsoft/BotFramework-Composer-Nightlies/releases/tag/v1.1.1-nightly.178300.83c0804

[beyackle]

I've verified that the PR I have in review fixes this bug as well.