Revert Job Offer OR create HIFIS job Offers page

• @jandt-desy collect job offers from other HIFIS centres to be published. Should contain
  • link
  • expiration date
  • optional: 1-2 short sentences for description/ad
• create job offer page and link

if nothing to offer until 30 Sep:

• Revert from !75 (merged) to https://www.helmholtz.de/en/jobs_talent/job_vacancies/