Network communication changes
* Server will send connection established package as soon as the TCP connection is established. Client emits "connected()" signals as soon as it receives the init-package from server (not when the TCP connection is established!).
* Authentication is not used for the moment.
* Removes one not really needed function layer, moved implementation one layer up in some cases.
* Server and client supports updates of client-information.
Merge branch 'master' of github.com:mfreiholz/webcam-streaming-client