Add save functions for the OpenTable and Calendly blocks

[scruffian]

Changes proposed in this Pull Request:

• Adds save functions to both the OpenTable and Calendly blocks. This means that when these blocks are rendered outside of a post there will be fall back content (URLs)

Is this a new feature or does it add/remove features to an existing part of Jetpack?

• p58i-8tn#comment-44442-p2

Testing instructions:

• Add a Calendly block and enter a valid URL
• Look in the code editor and check you see the URL between the comments, something like:

• Add an OpenTable block and enter a valid restaurant(s)
• Look in the code editor and check you see the URL between the comments, something like:

Proposed changelog entry for your changes:

• no changelog

[matticbot]

Caution: This PR has changes that must be merged to WordPress.com
Hello scruffian! These changes need to be synced to WordPress.com - If you 're an a11n, please commandeer, review, and approve D38011-code before merging this PR. Thank you!

[jetpackbot]

Thank you for the great PR description!

When this PR is ready for review, please apply the [Status] Needs Review label. If you are an a11n, please have someone from your team review the code if possible. The Jetpack team will also review this PR and merge it to be included in the next Jetpack release.

Scheduled Jetpack release: February 11, 2020.
Scheduled code freeze: February 4, 2020

Generated by 🚫 dangerJS against 0d849ee

[jeherve]

Could those be full links so one can click on them when they're displayed outside of WordPress (e.g. subscription emails or feeds) or when the Jetpack plugin gets deactivated?

[matticbot]

scruffian, Your synced wpcom patch D38011-code has been updated.

[matticbot]

scruffian, Your synced wpcom patch D38011-code has been updated.

[scruffian]

r202188-wpcom