Designs: qk5s4q4mZsXknwhMWo2vIY-fi-9613%3A21166

Note: Designs for Android is still in progress, but it should be pretty similar.

Update the current Jetpack remote install flow:

• Use the correct Jetpack logo. The current one uses the wrong green color.
• Use a similar button style to the Jetpack Install overlay.
• Modify some spacing values.
• Update the error screen.
• Remove the back / cancel button.

This is targeted for 21.9 22.0.