Removes the new server action from the Servers view toolbar

* Replaces the new server action with the refresh server action so it is
  more prominent

* TeiidServerActionProvider
 * No need to provide any other special actions on the toolbar when the
   teiid server configuration is selected

* plugin.xml
* RefreshServerAction
 * Adds the action as a command to the toolbar using extension framework
 * Converts action into a handler so it can be executed via the extension
   framework
Updates target platform to use JBT-IS 4.1.1
Early Startup of ModelerCore is problematic

* Use of an early startup class in the ModelerCore plugin clashes with
  startup processes in ModelerCore.start(). Result of this is tests can
  hang or take a long time to complete!

* TeiidServerManager
 * Scrapping the early startup class means the manager is lazily loaded
   when something first requests it. Thus, more processes need to be
   moved after its restoration. This includes the PreviewManager, which
   uses the manager default server version when creating preview jobs on
   its initialisation.
TEIIDDES-1821 Modeshape JDBC import option does not work
Fixed some layout issues in importer UI, changed version to 3.4, fixed the way the REST response and parsing of repositories.
Merge pull request #221 from elvisisking/1821

TEIIDDES-1821 Modeshape JDBC import option does not work