Use internal census system

[antopalidi]

fixes #60

• add internal and external types for census
  

• If the user is not logged in, a modal window appears when trying to start voting:
  

• If the election is set up with an internal census and any type of verification is selected, a modal window with required missing verifications will be displayed when the user tries to start voting:
  

• add "Update census" button to steps page, add info about the update

[codecov]

Codecov Report

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Additional details and impacted files

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[microstudi]

Initial comments!

[microstudi]

Nice job, we are close to finish it.

I would like to suggest in this review some changes.
On one side, I would prefer to use more semantic name ins general (lets call internal_census instead of permissions for instance). I've left some examples in the comments.

I'd also improve a little the admin page, here is my suggestion:

Finally, I give you a suggestion to properly obtain valid users (from the organization, not deleted) with or without authorizations depending on the configurations.

[andreslucena]

I have some suggestions for improving the feature. Can you check them out 🙏🏽 ?

[antopalidi]

@andreslucena Andres, all the changes have been made

[andreslucena]

I have more feedback, can you check it out?

[andreslucena]

About the data selectors, I'm seeing that we have lots of them, so maybe we can move the task to an issue to not add too much workload on this PR.

[antopalidi]

@andreslucena all done

[andreslucena]

Approving this PR as I'm happy with the result.

Thanks for your patience @antopalidi !! This looks great 👏🏽 👏🏽