Clearer deploy step, and a single contact form.

Improved: The deploy step in the new-bot wizard explains each channel, and offers ways to skip ahead if you cannot install right now. Bots are activated automatically when you reach it.
Improved: Training and source refresh flows had several fixes, including a case where refreshing did not pick up changed pages.
Improved: Copy across the app was rewritten to read more naturally.
Fixed: Inviting a member and accepting the invitation.
Removed: The separate feedback form. Use Contact in the sidebar for questions and feedback.