Collaboration: Temporarily disable CAN READ setting.
ChatSettingsPane: Add a property for amIHost.
ChatSettingsPane: Added onboarding view.
ChatMessagePane: Don't show onboarding view if there is a user message in chat.
ChatMessagePane: Added Learn More menu item.
ChatSettingsPane: Updated legal text.
SettingsPane: Updated legal text.
ChatMessagePane: Added existence check.
ChatView: Handle add people link on settings pane.
IDE: Updated ide and chat pane styling.