Fill in the blanks: Final preparation for release

[LarsTheGlidingSquirrel]

Makes the plugin available also outside staging.

Drag and drop mode is working on a basic level but there is no way for the user to change to this mode currently. Drag and drop mode will be worked on after this first release.

TODO before merge:

• Give pasted blanks a unique id
• Review

[vercel]

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Name	Status	Preview	Updated (UTC)
frontend	✅ Ready (Inspect)	Visit Preview	Dec 14, 2023 0:37am

[hejtful]

Beside the defaultLearnerFeedback suggestion that we discussed, everything looks good to me!

[github-actions]

📦 Next.js Bundle Analysis for @serlo/frontend

This analysis was generated by the Next.js Bundle Analysis action. 🤖

⚠️ Global Bundle Size Increased

Page	Size (compressed)
global	103.72 KB (🟡 +35 B)

Details

The global bundle is the javascript bundle that loads alongside every page. It is in its own category because its impact is much higher - an increase to its size means that every page on your website loads slower, and a decrease means every page loads faster.

Any third party scripts you have added directly to your app using the <script> tag are not accounted for in this analysis

If you want further insight into what is behind the changes, give @next/bundle-analyzer a try!

Thirty-six Pages Changed Size

The following pages changed size from the code in this PR compared to its base branch:

Page	Size (compressed)	First Load
/	85.5 KB (🟢 -10 B)	189.23 KB
/[...slug]	78.13 KB (🟡 +4.7 KB)	181.85 KB
/___bot_or_not	95.36 KB (🟡 +4.59 KB)	199.08 KB
/___editor_preview	477.65 KB (🟡 +1.72 KB)	581.38 KB
/___old_comments	101.72 KB (🟡 +4 B)	205.45 KB
/auth/login	80.73 KB (-1 B)	184.46 KB
/auth/oauth/login	80.74 KB (-1 B)	184.46 KB
/auth/recovery	62.62 KB (-1 B)	166.34 KB
/auth/registration	63.56 KB (-1 B)	167.29 KB
/auth/settings	63.68 KB (-1 B)	167.4 KB
/auth/verification	62.97 KB (-1 B)	166.7 KB
/biologie	156.54 KB (🟡 +4.91 KB)	260.27 KB
/chemie	156.54 KB (🟡 +4.91 KB)	260.26 KB
/content-only/[...slug]	71.96 KB (🟡 +4.28 KB)	175.69 KB
/discussions	96.41 KB (🟡 +2 B)	200.14 KB
/editor	104.37 KB (🟡 +4.78 KB)	208.09 KB
/entity/create/[type]/[taxonomyId]	479.33 KB (🟡 +1.99 KB)	583.05 KB
/entity/link/order/[id]/link	93.17 KB (🟡 +309 B)	196.9 KB
/entity/repository/add-revision/[...id]	478.54 KB (🟡 +1.99 KB)	582.27 KB
/entity/repository/compare/[entity_id]/[revision_id]	105.63 KB (🟡 +4.87 KB)	209.36 KB
/event/history	129.58 KB (-6 B)	233.31 KB
/event/history/[...slug]	133.34 KB (🟡 +7 B)	237.06 KB
/gleichungs-app	164.83 KB (🟢 -377 B)	268.56 KB
/informatik	156.54 KB (🟡 +4.91 KB)	260.27 KB
/lerntipps	156.54 KB (🟡 +4.91 KB)	260.27 KB
/license/detail/[id]	57.92 KB (🟡 +4.58 KB)	161.65 KB
/mathe	156.54 KB (🟡 +4.91 KB)	260.26 KB
/nachhaltigkeit	156.55 KB (🟡 +4.91 KB)	260.27 KB
/page/create	478.56 KB (🟡 +1.99 KB)	582.28 KB
/taxonomy/term/[copyOrMove]/batch/[id]	70.7 KB (-1 B)	174.43 KB
/taxonomy/term/create/[parent_id]/[id]	478.25 KB (🟡 +1.99 KB)	581.97 KB
/taxonomy/term/sort/entities/[id]	95.7 KB (🟡 +308 B)	199.43 KB
/taxonomy/term/update/[id]	478.16 KB (🟡 +1.99 KB)	581.89 KB
/user/[...userslug]	176.8 KB (🟡 +4.58 KB)	280.52 KB
/user/notifications	132.32 KB (-5 B)	236.05 KB
/user/settings	476.9 KB (🟡 +1.99 KB)	580.63 KB

Details

Only the gzipped size is provided here based on an expert tip.

First Load is the size of the global bundle plus the bundle for the individual page. If a user were to show up to your website and land on a given page, the first load size represents the amount of javascript that user would need to download. If next/link is used, subsequent page loads would only need to download that page's bundle (the number in the "Size" column), since the global bundle has already been downloaded.

Any third party scripts you have added directly to your app using the <script> tag are not accounted for in this analysis

Next to the size is how much the size has increased or decreased compared with the base branch of this PR. If this percentage has increased by 20% or more, there will be a red status indicator applied, indicating that special attention should be given to this.

[LarsTheGlidingSquirrel]

@kulla Rerequested your review. Things that changed:

• Slate custom element type changed from blank to textBlank (so that we can have numberBlank and so on in the near future) and removed checkAnswerMethod
• Rewrote toggleBlank function. Tested this a bunch and seems to work in all cases now.
• Added slate normalization that gives blanks a unique id (needed when copy&past blanks)