* User muting
* Address review feedback
* Rename uniqueness constraint on user_mutes to match convention
* Remove unused account_id from where clause
* Add UserMute to NewTestDB
* Update test/envparsing.sh with new and fixed cache stuff
* Address tobi's review comments
* Make compiledUserMuteListEntry.expired consistent with UserMute.Expired
* Make sure mute_expires_at is serialized as an explicit null for indefinite mutes
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Co-authored-by: tobi <tobi.smethurst@protonmail.com>
