Display TLS information

As a first step towards the support for configuring TLS protocols and cipher suites, I have created a patch which adds logging of the available protocols/algorithms and finally the chosen ones. The patch also adds the ability to access the protocol and algorithm used as well as the server certificate chain. 

At the moment this information will be available in the call information frame.

Currently this patch only implements support for getting the TLS information from the Jabber ProtocolProviderService.