Updates wording of onboarding to specify VaultPress

[ChaosExAnima]

Changes proposed in this Pull Request

• This updates the onboarding checklist to specify VaultPress instead of a more generic phrase, to avoid confusion with Jetpack Backup and Scan product.

Testing instructions

• Set up a Jetpack site with a plan with VaultPress.
• Go to Plan > My Plan.
• Toggle the prop vaultpressFinished on the JetpackChecklist component and observe results.

Screenshots:

Fixes 1143508703416848-as-1174921179573827.

[matticbot]

Test live: https://calypso.live/?branch=fix/change-vp-checklist-wording

[matticbot]

This PR does not affect the size of JS and CSS bundles shipped to the user's browser.

Generated by performance advisor bot at iscalypsofastyet.com.

[mattgawarecki]

I wasn't able to see the original behavior in production -- for some reason, it still shows my site as having "Backup & Scan" -- but I was able to verify the behavior in your screenshots on my local copy:

vaultpressFinished = true

vaultpressFinished = false

[jeffgolenski]

Tested on one of @ChaosExAnima's test sites!

Per a slack convo, the VaultPress references look good.

My only concern is that the "try it" button CTA should not be displaying while we're auto activating VP. (which may be for another PR).

Thanks Echo!

[a8ci18n]

This Pull Request is now available for translation here: https://translate.wordpress.com/deliverables/3564890

Thank you @ChaosExAnima for including a screenshot in the description! This is really helpful for our translators.

[akirk]

^ Sorry, this is a bug. Translation will take some more time. The bot will update its message soon.