* Merge /site_inbox into /inbox (fixes#4137)
Get rid of different inboxes, only use /inbox
Remove shared_inbox_url db columns
add code migration
move to db migration, fixes
machete
fix sql
drop inbox url unique constraints
Dont create auth cookie in backend (#4136)
dont change individual inboxes to shared inbox
Dont send comment reply to user who has community blocked. Fixes#3684 (#4096)
* Dont send comment reply to user who has community blocked. Fixes#3684
* Adding source instance block check.
* Adding api test.
* Addressing PR comments.
* move site inbox rewrite to db
* fix test
* clippy
* clippy 2
* fix test
