Ask BL users to migrate to GCB

[kienstra]

Changes

• This notice will supersede the previous notice.
• The previous notice will never display.
• But even if they've dismissed the previous notice, this will show.
• Still, this will only show on specific pages, not on every /wp-admin page.

Testing instructions

1. composer install && npm install && npm run dev
2. Go to /wp-admin > Block Lab
3. Expected: the new notice appears
4. Click 'Migrate'
5. Expected: the new migration copy and .gif appear:

[kienstra]

It looks like Travis is out, I think there's a limit on free plans now.

It might not be worth it to set up GitHub actions.

For now, npm run lint && npm run test:js should be alright.

[lukecarbis]

@kienstra What's the reason for kicking off this PR?

[kienstra]

Hi @lukecarbis, Ah, I should have linked to GF-2789.

The idea is to let Block Lab users know that GCB is now much better than BL, with the new editor. Ideally, this could convince some of the 9,000 users to migrate.

As you know, when we first released GCB, it wasn't really better than GCB.

[kienstra]

Here's the new migration notice copy:

Here's the new migration page copy:

[kienstra]

Todo:

• [x] Add the new wp.org banner image
• [x] Add the .gif to the migration page

[kienstra]

Hi @RobStino and @lukecarbis, Could you please review this?

Travis isn't running anymore, I think you have to pay to use it at the rate we did.

So feel free to run linting or testing on your own if you'd like: npm run lint && npm run test:js

[kienstra]

@dreamwhisper, Thanks so much!

[kienstra]

I disabled Travis. It wasn't running anyway, I think this repo went over the free runs they allow.