Add hide previous editions button

Description

• A new button which hides all previous editions (ie. end date in the past)
• Button is only added to job-offer/manage and job-offer/manage/all pages
  • Students shouldn't need this because once a job offer / extra work is closed it no longer appears (even if hired), thus it wouldn't be of use

Related Issues

• Resolves #52 (closed)

Checklist

• I have added a changelog entry to reflect the significant changes I made.

changed milestone to %Working v2.0

added typeimprovement + 1 deleted label

requested review from @rbackx

assigned to @toberhuber

Rounded corners look out of place, should probably just be square

added 1 commit

• 9fc67c81 - Remove rounded corners on button

Compare with previous version

resolved all threads

approved this merge request

enabled automatic add to merge train when the pipeline for 42273969 succeeds

started a merge train

merged

mentioned in commit 2008fbf9

unassigned @toberhuber