Add optgroup to separate tags and branches, with nice names

1 job for next in 2 minutes and 10 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Deploy
failed #2197
docker-privileged
Build Docker image

00:02:10

 
Name Stage Failure
failed
Build Docker image Deploy
Collecting Flask-Matomo==1.2.0 (from -r requirements.txt (line 6))
Downloading https://files.pythonhosted.org/packages/35/ca/f8b9f9b95d3a376006b7ae4a6e0cd4cb10cecce42fb2c91ecbb7210894bc/Flask-Matomo-1.2.0.tar.gz
Collecting lxml==4.2.5 (from -r requirements.txt (line 7))
Downloading https://files.pythonhosted.org/packages/7a/6b/a3d2d3c3075617edcbfc272d79281e812b1a94dab37923b1d06fdfe2e906/lxml-4.2.5-cp37-cp37m-manylinux1_x86_64.whl (5.8MB)
Collecting opendataschema==0.5.2 (from -r requirements.txt (line 8))
ERROR: Could not find a version that satisfies the requirement opendataschema==0.5.2 (from -r requirements.txt (line 8)) (from versions: 0.0.1, 0.1.0, 0.2.0, 0.3.0, 0.4.0, 0.4.1, 0.5.0)
ERROR: No matching distribution found for opendataschema==0.5.2 (from -r requirements.txt (line 8))
The command '/bin/sh -c pip install --requirement requirements.txt' returned a non-zero code: 1
ERROR: Job failed: exit code 1