Fix bug where Post.createdAt is sometimes null

Created by: Tirokk

Authored by roschaefer Sep 13, 2019 Merged Sep 16, 2019

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🍰 Pullrequest

Issues

• fixes #1494 (closed)
• fixes #1456 (closed)
• fixes #1575 (closed)

Todo

• implement custom CreateComment resolver and update updatedAt there