Commits for 2020-01-19

The following 4 changes have been made on 2020-01-19:

- re-added missing trait (Author: Mirko De Grandis, Hash: #f9068e2)
- Merge branch 'master' of github.com:degami/sitebase (Author: Mirko De Grandis, Hash: #90f007c)
- db - forced id column to be not null (Author: Mirko De Grandis, Hash: #223a3a9)
- used a trait to avoid code duplication on frontend pages (Author: Mirko De Grandis, Hash: #a5c299b)

Check it out. More are coming soon!