Feature/lecturer all courses

[tobias-wiese]

Description

Implements issue #375

Reason for this PR

• The lecturer might want to have an overview of all existing courses

Changes in this PR

• add a new route
• routing to the lecturer course list now provides a prop to determine whether all courses or just own courses should be shown
• component refreshes if prop changes
• when showing all courses, the edit button will be shown iff its your own course

Type of change (remove all that don't apply)

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• Manually tested all use cases this could alter

Test Configuration:

• OS: Windows Mac Linux

• Browser: Firefox Chrome Safari Chromium

• Frontend: (remove all that don't apply)

  • Development build

• Backend: (remove all that don't apply)

  • No backend needed to test this
  • deployed development build

Checklist: (remove all that don't apply)

• I added corresponding E2E tests (especially for bugfixes)
• I have performed a self-review of my own code
• My changes generate no new linting warnings or console warnings
• I have updated the CHANGELOG.md to include any changes made in this PR (add WIP to the top, if there is none already)