From Bertrand: Improve behavior of TSessionViewer: - automatically update the list of existing sessions on the server   at connection time - fix the bug #16882, Proof GUI startup: wrong defaults   (http://savannah.cern.ch/bugs/?func=detailitem&item_id=16882)
From Bertrand:
Improve behavior of TSessionViewer:
- automatically update the list of existing sessions on the server
  at connection time
- fix the bug #16882, Proof GUI startup: wrong defaults
  (http://savannah.cern.ch/bugs/?func=detailitem&item_id=16882)


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@16320 27541ba8-7e3a-0410-8455-c3a389f83636

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