Add contact model

[JoeyStk]

Short description

This PR adds the initial db model for our new contact section.

Proposed changes

• Add blueprint for model
  • fields as described in issue description
  • default fields such as created, last updated and others
• Add migration file for it
• Add dummy contact to test data

Side effects

• I decided for region as we want every contact to be (implictly) assigned to a region
• The relation POI to contact is 1 to 1 (as requested in the requirements)
• The relation contact to region is 1 to 1 (as requested in the requirements)
• Once this is merged, it unblocks a couple of other issues related to this feature

Resolved issues

Fixes: Parts of #2952

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Pull Request Review Guidelines

[codeclimate]

Code Climate has analyzed commit 486c6a7 and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 80.3% (50% is the threshold).

This pull request will bring the total coverage in the repository to 83.3%.

View more on Code Climate.

[MizukiTemma]

@JoeyStk
Is the list comming together in this PR or will it be implemented separately?

[JoeyStk]

@MizukiTemma I was undecided about this yesterday. How about we merge this without the list and once #2951 is merged, I will open a new PR for the list? :)

[MizukiTemma]

@MizukiTemma I was undecided about this yesterday. How about we merge this without the list and once #2951 is merged, I will open a new PR for the list? :)

Ok 😉

[david-venhoff]

Not a full review yet, but I would suggest to also include permissions for the model here. Otherwise we would have to introduce another migration

[JoeyStk]

In many commits I was able to fulfill all of your suggestions. Please feel free to review again :)

[david-venhoff]

Thanks, I think this looks good now.

One thing to note is that we will almost certainly have to change the model again soon, to implement the remaining contact related issues (for example #2959), which feels a bit weird to me, but I don't think it makes sense to delay this further either :/

[MizukiTemma]

Looks almost good 💪 I have only one concern to the permission settings in context of hiding this feature to most of users until completed.

[MizukiTemma]

Thank you so much 🎉