install screenconnect client over top of existing program should update session key

If we 'end' a session on a remote machine with the screenconnect client installed, the program is still left installed. That's normal and expected. However, to reconnect to a customer, the client must first UNINSTALL the client, then reinstall from a fresh downloaded client.

I am suggesting that a freshly downloaded screenconnect client from the SAME screenconnect installation should just freshen the key to allow reconnection without uninstallation first.

this would make the reconnection to a client one less step (no uninstallation would be necessary).