nuMessage

- bug fixes
- a number of UI changes have been implemented
- the new logic of chat management is now available
- profiles have been simplified, only one left
- flow for contact establishment has been improved
- conference calls have been improved
- you can now switch to full-screen mode during calls and screen sharing
- new Calls menu has been introduced
- now you can call anyone, not only your contacts
- sharing to existing chats has been improved
- a global search has been implemented