Prepare 1.16.1 Release

Render emojis in email content (#7062)

* Render emojis in email content

* Cache emoji data and display emoji on email subject

* Fix finding emoji in content

Fixed missing merge import

Fix flag of new content notification space (#7014)

Co-authored-by: Lucas Bartholemy <[email protected]>

Prepare 1.15.5 Release

Prepare Beta 2 Release

Prepare 1.16.0-beta.1 RELEASE

Prepare 1.15.4 release

Prepare 1.15.3 release

Update common.php