Implement multiple call to actions

[waltersajtos]

Description

In the original designs of the detail page, it was possible to add multiple call-to-action options. This pull request will implement these designs and functionality.

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 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
• 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

Outline the steps to test or reproduce the PR here.
These steps will be used during release testing.

1. Add a project with 3 call-to-action.
2. Go to the overview page and check if the project has the call to action buttons with the URLs.
3. Edit your project and change a url and remove a call to action button.
4. Validate the changes came through.

Link to issue

Closes: #454

[niraymak]

The project categories don't show as active anymore on the edit page.

Styling beneath the call to actions on the edit page seemed a bit odd. Is the styling on the buttons updated on purpose?

[niraymak]

😄

[niraymak]

😄