Added dependencies for free fontawesome.

Adds an attribute (false by default) that allows hiding the detail header (References / unreferenced, Grading Criterion ID etc.) from inline feedback.

Adds the expert view and auxiliary data and an auxiliary button to access the expert view temporarily in testing

- Replaced sanitize-html with Markdown rendering for metric descriptions.
- Simplified the process of editing descriptions by allowing Markdown syntax.
- Improved visualization of descriptions in popups and during the editing process, enhancing the user experience and readability.

- Refactored the Metric type, which was previously defined in two separate locations, to now consistently use the Metric type from the model.
- Moved the ExpertEvaluationConfig definition from the evaluation_management component to the model, enabling reuse across multiple components for better maintainability and consistency.

- Fixes an issue where switching the ExpertEvaluationConfig via the dropdown did not correctly update the selected exercises.
- Refactors the ExpertEvaluationExerciseSelect component to simplify its structure by moving data fetching and error handling to the child component.
- Ensures proper synchronization of selected exercises between the parent and child components.
- Implements better separation of concerns by letting the parent manage state while the child handles fetching and rendering exercises.
- Adds multiple exercise selection capability with clear communication between the parent and child components.

This commit improves code clarity, ensures reliable state management, and enhances user experience during config switching and exercise selection.

- Added creationDate Attribute to better distinguish configs with same name.
- Added eager loading of submissions and categorizedFeedbacks in multiple_exercises_select for simpler access.

- Made the header in the expert view of the side-by-side tool sticky, allowing experts to navigate more efficiently without needing to scroll back to the top after each evaluation.
- Reduced the header’s footprint, giving more screen space for critical evaluation features and improving overall usability.
- Enhanced the visual appeal by adding a cleaner, more functional progress bar for tracking evaluation progress.

Once an evaluation is started, the user is not able to change it anymore.

Enables the researchers to create links for the expert evaluation. The experts can access the side by side tool with the links

…um/Athena into feature/side-by-side-tool

When an experiment is started, no new metrics can be added. Therefor, the new metric form is now hidden accordingly.

- If disabled, buttons are hidden form the evaluation management rather than disabling them.
- Use section instead of labels if fitting

Integrated ExerciseImport into EvaluationManagement for better exercise management.
Removed selection of multiple exercises via checkboxes.

- Moved edit an remove button to the side of metrics to save some space

- Since the expert view is working properly and since we can create proper expert links, this component is not needed anymore.

- Adding existing ExerciseDetail component to Exercise Detail Popub

…feature/side-by-side-tool

…um/Athena into feature/side-by-side-tool

- Added Download button to the evaluation management. The button can be used to download all current evaluation results once the evaluation was started.
- Added basic authentication against an environment variable on the playground
- Edited export endpoint to only allow export of certain directories if the playground secret was provided

- Removed two unused files
- Applied some code style to a few files. This should decrease the number of changed LoC

- Added possibility to cancel changes
- Changed saving behaviour -> only saves when the user clicks the save button
- Save button now is disabled when no changes where made. This should give the user a better visual feedback that the save was performed.
- Streamlined update function and corresponding onChange functions

- Fixed import
- Aligned color of add metric button with other green buttons
- Aligned start evaluation button to be on same line as other buttons

…feature/side-by-side-tool

# Conflicts:
#	playground/src/helpers/get_data.ts
#	playground/src/pages/[expert_evaluation_config_id]/[expert_id]/expert_view.tsx

…feature/side-by-side-tool

# Conflicts:
#	playground/src/components/expert_evaluation/expert_view/congratulation_screen.tsx
#	playground/src/components/expert_evaluation/expert_view/exercise_screen.tsx
#	playground/src/components/expert_evaluation/expert_view/welcome_screen.tsx
#	playground/src/pages/[expert_evaluation_config_id]/[expert_id]/expert_view.tsx

- Formatted code using VSCode to reduce overall changed LOC.
- Consistent function headers for new react components

I accidentally deleted the wrong file. It's now restored and the correct file is deleted.