wxiaoguang 960c322586 Refactor update checker to use AppState (#17387) ... We have the `AppState` module now, it can store app related data easily. We do not need to create separate tables for each feature. So the update checker can use `AppState` instead of a one-row dedicate table. And the code of update checker is moved from `models` to `modules`.		2021-10-21 17:10:49 +01:00
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update_checker.go	…