TEIIDDES-1594: Refresh the server panel on name change of the server

* Adds an execution configuration listener to the server panel so that
  the text will be updated if the default server receives any configuartion
  updates, such as custom label.
TEIIDDES-363: Preference for ignoring cross-join warnings

* Add an option into eclipse preferences that can allow ignoring of
  group cross-join validation problems.