Add email to Organization type.

[iphydf]

This change is 

[nicoonoclaste]

Ideally, the sorting of datatype fields, esp. in the `User` type, should go in their own commit, but aside from that this seems good.

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Reviewed 3 of 3 files at r1.
Review status: all files reviewed at latest revision, all discussions resolved, some commit checks failed.

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[nicoonoclaste]

PS: I used lgtm_strong as I assume the CI failure is due to the rebase being needed after the switch from Server to Handlerin #77.

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Review status: all files reviewed at latest revision, all discussions resolved, some commit checks failed.

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[robinlinden]

Reviewed 3 of 3 files at r1.
Review status: all files reviewed at latest revision, all discussions resolved, some commit checks failed.

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Comments from Reviewable