* Don't use legacy send for messages

* Add migrations to ensure Matrix webhooks use PUT

* Set HTTP method to PUT as default

* Fix sql condition..

Signed-off-by: Till Faelligen <tfaelligen@gmail.com>

* Rename getTxnID -> getMatrixTxnID

* Use local variable instead of constant value

Co-authored-by: techknowlogick <techknowlogick@gitea.io>