Release v2.9.1

* fix admin header shown in SL viewer embed and modal
* fix permissions issues with
* fix crash if W4OS_NULL_KEY is called too early
* fix hop teleport links

v3 beta features (available from github or w4os website releases):
* new Connections settings page
* new encrypt simulators credentials
* enhanced Avatars list with modal profile preview
* enhanced fetch database credentials from console if console is enabled
* enhanced fetch ini config from console if available
* enhanced settings API