Starting VPN by name and enhancing daemon output

[mostafahussein]

I have modified the code a little instead of displaying the whole trace to the user like this:

Traceback (most recent call last):
  File "/bin/pritunl-client", line 9, in <module>
    load_entry_point('pritunl-client==1.0.894.98', 'console_scripts', 'pritunl-client')()
  File "/usr/lib/pritunl-client/lib/python2.7/site-packages/pritunl_client/__main__.py", line 222, in client_shell
    cli()
  File "/usr/lib/pritunl-client/lib/python2.7/site-packages/pritunl_client/click/core.py", line 663, in __call__
    return self.main(*args, **kwargs)
  File "/usr/lib/pritunl-client/lib/python2.7/site-packages/pritunl_client/click/core.py", line 643, in main
    rv = self.invoke(ctx)
  File "/usr/lib/pritunl-client/lib/python2.7/site-packages/pritunl_client/click/core.py", line 990, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/lib/pritunl-client/lib/python2.7/site-packages/pritunl_client/click/core.py", line 836, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/lib/pritunl-client/lib/python2.7/site-packages/pritunl_client/click/core.py", line 463, in invoke
    return callback(*args, **kwargs)
  File "/usr/lib/pritunl-client/lib/python2.7/site-packages/pritunl_client/__main__.py", line 60, in daemon_cmd
    shell_app.ShellApp()
  File "/usr/lib/pritunl-client/lib/python2.7/site-packages/pritunl_client/shell_app.py", line 202, in __init__
    self.start_server()
  File "/usr/lib/pritunl-client/lib/python2.7/site-packages/pritunl_client/shell_app.py", line 231, in start_server
    Request,
  File "/usr/lib64/python2.7/SocketServer.py", line 420, in __init__
    self.server_bind()
  File "/usr/lib64/python2.7/BaseHTTPServer.py", line 108, in server_bind
    SocketServer.TCPServer.server_bind(self)
  File "/usr/lib64/python2.7/SocketServer.py", line 434, in server_bind
    self.socket.bind(self.server_address)
  File "/usr/lib64/python2.7/socket.py", line 228, in meth
    return getattr(self._sock,name)(*args)
socket.error: [Errno 98] Address already in use

when running:

pritunl-client daemon

It will be as follows:

[2016-04-10 20:29:32,255][INFO] Address already in use. Make sure that port 9797 is available.

UPDATE:

I have added the ability to start vpn connection by name not just profile ID which should solve this #17

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This change is