* fix: Allow viewers to upload avatar
* DeleteAttachmentTask
* fix: Previous avatar should be deleted on change, if possible
* fix: Also cleanup team logo on change
This PR moves the entire project to Typescript. Due to the ~1000 ignores this will lead to a messy codebase for a while, but the churn is worth it – all of those ignore comments are places that were never type-safe previously.
closes#1282