Merge branch 'fix-plotly' into 'master'

Fix plotly plots

Closes #61

See merge request !48
4 jobs for master in 2 minutes and 59 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #62969
build lectures

00:02:37

 
  Deploy
passed #62970
deploy test version

00:00:22

failed #62972
merge into local

00:00:18

manual #62971
allowed to fail manual
undeploy test version
 
Name Stage Failure
failed
merge into local Deploy
$ git checkout local; git reset --hard origin/local
Switched to branch 'local'
Your branch is up to date with 'origin/local'.
HEAD is now at 25e0abb Merge branch 'master' into local
$ git diff-index --quiet master || git -c "user.name=$GITLAB_USER_NAME" -c "user.email=$GITLAB_USER_EMAIL" merge master
Auto-merging .gitlab-ci.yml
CONFLICT (content): Merge conflict in .gitlab-ci.yml
Automatic merge failed; fix conflicts and then commit the result.
ERROR: Job failed: exit code 1