Hostname / desktop name replaces connection name

All protocols currently supported by Guacamole will send the name of the connection at some point, either as part of the underlying protocol (VNC), to update the window title in response to console codes (SSH and telnet), or as a leftover convention from the early days of Guacamole where sending the name was required (RDP).

This behavior was essentially lost as Guacamole switch over to its AngularJS-driven interface, as the "name" instruction was ignored in favor of using the connection's name, but has resurfaced as a usability bug due to GUACAMOLE-265, part of 0.9.13-incubating, which allowed SSH/telnet connections to change the window title via OSC 0.

As the name of the connection sent via VNC and the hostname of the RDP connection are likely to be internal information, this behavior should probably be:

1. Removed entirely from RDP, as the value submitted really is just the value of the "hostname" parameter.
2. Made configurable for VNC, as it is a feature of the VNC protocol, albeit not desirable in all cases. Removed entirely from VNC.

NOTE: While it would be nice for this to be configurable within VNC, that would end up being a much larger change. As currently implemented, the name is sent incorrectly: only once as part of the main client thread. For this to be correct, the name would need to be preserved such that users joining the connection are sent the name, as well. If such an option is to be provided, it should be part of a different issue.