Use autodiscover code of Django for checks and model extensions

Apart from not duplicating code, this allows us to move all loading to the core's ready() method, which ensures the code runs before thirs-party apps rely on it.

added part::backend type::bug labels

added 1 commit

• 93b0a1f3 - Remove superfluous import

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Can you add form_extensions, please?

resolved all threads

added 1 commit

• 5463661c - Apply suggestion to aleksis/core/apps.py

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enabled an automatic merge when the pipeline for 5463661c succeeds

canceled the automatic merge

mentioned in commit 94f66037

merged