Marketplace: check for preinstalled plugins by slug.

[cpapazoglou]

• move array with slug constants to a more central file
• reuse these constants in plugin details page
• make sure to show these plugins as installed and active. We might also need to check for the current plan site features active.

Changes proposed in this Pull Request

• check preinstalled plugins by slug

Testing instructions

• search for 'jetpack','akismet','vaultpress','gutenberg','full-site-editing','layout-grid','page-optimize'
• make sure that these plugins appear as installed and active in plugin browser list and plugin details page

Before	After

Related to p1652448293562329-slack-C029JEQRVRT

[github-actions]

Calypso Live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-33732

Jetpack Cloud live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-33732&env=jetpack

[matticbot]

Here is how your PR affects size of JS and CSS bundles shipped to the user's browser:

Sections (~165 bytes added 📈 [gzipped])

name         parsed_size           gzip_size
plugins           +493 B  (+0.1%)     +105 B  (+0.1%)
marketplace       +161 B  (+0.0%)      +60 B  (+0.0%)

Sections contain code specific for a given set of routes. Is downloaded and parsed only when a particular route is navigated to.

Legend

What is parsed and gzip size?

Parsed Size: Uncompressed size of the JS and CSS files. This much code needs to be parsed and stored in memory.
Gzip Size: Compressed size of the JS and CSS files. This much data needs to be downloaded over network.

Generated by performance advisor bot at iscalypsofastyet.com.

[matticbot]

This PR modifies the release build for editing-toolkit

To test your changes on WordPress.com, run install-plugin.sh editing-toolkit fix/preinstalled_plugins on your sandbox.

To deploy your changes after merging, see the documentation: PCYsg-mMA-p2

[epeicher]

I tested the listed plugins jetpack,akismet,vaultpress,gutenberg,full-site-editing,layout-grid,page-optimize and they all work as expected.

LGTM! 🚢

[a8ci18n]

This Pull Request is now available for translation here: https://translate.wordpress.com/deliverables/7315115

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

[a8ci18n]

Translation for this Pull Request has now been finished.