Bugfix/454 remove files

[RubenFricke]

Description

Able to remove images from project

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist

• My code follows the style guidelines of this project
• I did not update API Controllers, if I did, I added/changed Postman tests
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I updated the changelog with an end-user readable description
• I assigned this pull request to the correct project board to update the sprint board

Steps to Test or Reproduce

1. Create a project with a project icon and project image(s)
2. Update this project and remove the images
3. Validate that the images get removed

Link to issue

Closes: #454

[Arilith]

Works fine for me! Good job.

I have one minor detail, which maybe should be changed for consistency:
When trying to "delete" an image that does not exist while updating a project, the following error is produced:

The specified image was not found while creating project.
(FC816E40-31A6-4187-BEBA-D22F06019F8F)
However, it's updating the project, not creating. Maybe something to keep in mind for consistency.

[Arilith]

Thanks for the change! Looks great.