Merge branch 'fix-weeks' into 'master'

Enforce ISO weeks and period normalization

Closes dbnomics-fetchers/management#635

See merge request !31
1 job for master in 13 seconds (queued for 1 minute and 48 seconds)
Status Job ID Name Coverage
  Validate
failed #236075
ioke-shell triggered
Validate

00:00:13

 
Name Stage Failure
failed
Validate Validate

Note: not all series of each datasets have been checked (maximum 100 per dataset actually).
To check all series of all datasets, use "--all-series" option

Encountered errors codes:
- dataset-not-found-on-storage: 1
- category-tree-schema: 1
- duplicated-series-code: 332
ERROR: Job failed: exit status 1