Memory leak fix

Woops didn't completely clean up the memory leak regarding creating
RemoteMouseServerThread's
Clientside status notification

Setup callback for status updates regarding socket connection and key
validation.  Right now it is hooked up to just a TextView.  That should
be suffienct

Adds a status notification serverside of when a client disconnects.

Also cleaned up a bit of junk leftover from POC testing clientside.
Fixing bugs

What I thought to be a memory leak in regards to
RemoteMouseServerThreads was actually not a memory leak and getting
cleaned up with a signal/slot to deleteLater() that I forgot was
cleaning things up just fine so the deletes were removed.

Also discovered a significant bug in the signal/slot of creating a new
socket in the RemoteMouseServerThread objects.  The signal was
connected to the RemoteMouseServer so anytime a new client connected,
createSocket() was called on all threads; woops.