Explain ways to get to settings

[danirabbit]

Problem

We have a final screen that has a link to system settings, but it would be helpful to train other ways to get to System Settings since you won't be able to access this tutorial again later

Proposal

We should explain that System Settings can be opened:

• [ ] Via the launcher in the applications menu or by searching for specific settings in the applications menu
• [ ] From the gear icon in Quick Settings and by middle clicking quick settings toggles
• [ ] By secondary-clicking the wallpaper

Prior Art (Optional)

The Get Some Apps page has these nice big buttons with icons and explanation text