Merge develop into master

Test

• Deployed at https://codabench.lri.fr/

• Compute workers need to be updated:

docker stop compute_worker
docker rm compute_worker
docker pull codalab/competitions-v2-compute-worker:latest
docker run \
    -v /codabench:/codabench \
    -v /var/run/docker.sock:/var/run/docker.sock \
    -d \
    --env-file .env \
    --name compute_worker \
    --restart unless-stopped \
    --log-opt max-size=50m \
    --log-opt max-file=3 \
    codalab/competitions-v2-compute-worker:latest 

Changes

• #1214
• #1283
• #1285
• #1287
• Add show more buttons to front page (#1289)