Egd 2835 sms unread vs unseen notifications (#514)

Browse Source

* [EGD-2835] thread table based sms not read notifications

* [EGD-2835] removed redundant read field from sms db table

* [EGD-2835] clear unread status of a thread if thre thread is open

* [EGD-2835] updated database documentation

* [EGD-2835] added changelog

...

This commit is contained in:

500 Internal Server Error

Gitea Version: 1.28.0+dev-477-g8b6ad49a5f