Exam mode: Fix missing repository lock notifications

[Strohgelaender]

Checklist

General

• I tested all changes and their related features with all corresponding user types on a test server.
• This is a small issue that I tested locally and was confirmed by another developer on a test server.
• Language: I followed the guidelines for inclusive, diversity-sensitive, and appreciative language.
• I chose a title conforming to the naming conventions for pull requests.

Server

• Important: I implemented the changes with a very good performance and prevented too many (unnecessary) database calls.
• I followed the coding and design guidelines.
• I added multiple integration tests (Spring) related to the features (with a high test coverage).
• I documented the Java code using JavaDoc style.

Client

• Important: I implemented the changes with a very good performance, prevented too many (unnecessary) REST calls and made sure the UI is responsive, even with large data.
• I followed the coding and design guidelines.
• Following the theming guidelines, I specified colors only in the theming variable files and checked that the changes look consistent in both the light and the dark theme.
• I added multiple integration tests (Jest) related to the features (with a high test coverage), while following the test guidelines.
• I documented the TypeScript code using JSDoc style.
• I added multiple screenshots/screencasts of my UI changes.
• I translated all newly inserted strings into English and German.

Motivation and Context

The "The student repositories for this programming exercise were locked successfully." notification is missing for exam exercises, but it is an important piece of information for instructors to verify if the operation before and after the exam went well.

Description

The issue was that these type of notifications were "exercise updates" before. In exam exercises, these notifications get filtered out of from the notification bar (since the notification bar is not present during an exam and updates directly get highlighted in the exam viewer).

This PR introduces a new notification type for repository permission updates, which therefore won't be filtered out in the notification bar.

Steps for Testing

Prerequisites:

• 1 Instructor
• 1 Programming Exercise

1. Press the "lock repositories" / "unlock repositories" buttons and check that a notification is present
2. Wait until after the due date and check that an automatic notification is present.

Exam Mode Testing

Prerequisites:

• 1 Instructor
• 1 Exam with a Programming Exercise

1. Press the "lock repositories" / "unlock repositories" buttons and check that a notification is present
2. Wait until after the exam and check that an automatic notification is present.

Review Progress

Performance Review

• I (as a reviewer) confirm that the client changes (in particular related to REST calls and UI responsiveness) are implemented with a very good performance
• I (as a reviewer) confirm that the server changes (in particular related to database calls) are implemented with a very good performance

Code Review

• Code Review 1
• Code Review 2

Manual Tests

• Test 1
• Test 2

Exam Mode Test

• Test 1
• Test 2

Test Coverage

Screenshots

[tobias-lippert]

Code looks good but I don't understand one client side change

[tobias-lippert]

Code LGTM

[valentin-boehm]

lgtm

[xHadie]

Tested on LS11
Automatic notifaction after due date:

• notifcation was added to notification list and the bell icon showed that a new notification is present, but no growl notifaction bubble popped up.
  Exam mode
• no notification shows up when exam mode is enabled
• changing the submission policy from "Lock Repository" to either different option and back to "Lock Repository" results in an Internal server error.

[Strohgelaender]

@xHadie Thanks for testing.

but no growl notifaction bubble popped up

I assume you mean the notification on the bottom right of the screen by that. This is intentional, as these notifications should only be used for stuff that needs immediate attention, whereas these types of notifications are more a confirmation that don't require any manual action.

no notification shows up when exam mode is enabled

Do you mean while working on an exam? This is also correct, as we don't want to distract users while using the exam mode.

changing the submission policy from "Lock Repository" to either different option and back to "Lock Repository" results in an Internal server error.

This is unrelated to this PR, please open a GitHub issue to track this.

[JanaNF]

Manual tested on legacy_ts11. Worked as expected.

[JohannesStoehr]

Code

[tobias-lippert]

Code LGTM

[valentin-boehm]

Re-tested locally, works as expected

[maximiliansoelch]

Code looks good.
Tested on legacy ts1, works as expected.