Added tooltips for items on Source Binding Definition tab in VDB editor
Merge pull request #189 from lfabriko/teiiddes-1761

Added tooltips for items on Source Binding Definition tab in VDB editor
Updates parent pom to 4.1.0-CR1

* Also rebuilds target platform based on latest JBTIS 4.1 snapshot
Stop the Server view from collapsing when a folder is clicked on

* Annoying scenario where the Teiid server content is first expanded then
  collapses when a folder is selected. Due to the action provider setting
  the filtering on the content, which causes a refresh and thus the
  collapse.

* Action provider should NOT affect the content

* PreviewOptionContributor
 * Intermediary between the two providers, allowing then to affect each
   other but not directly referencing each other
 * Preview option flags bound up in this one class

* TeiidServerContentProvider
 * Implements ICommonContentProvider so its parent provider initialises
   it correctly
 * Refactors re-expand routine to a method so that the setting of the
   preview options re-expands after the refresh

* TeiidServerContainerNode
 * Rather than use viewer.setFilters which causes a refresh, adds the
   filtering directly to the content's logic. Since setting the preview
   options causes a rebuilding of the content, there is little reason to
   refresh again just to filter
Exception thrown by ModelExplorerResourceNavigator on exit

* Exception thrown by ModelExplorerResourceNavigator when setting the
  default server version text and the UI is in the process of exiting.

* Check for disposed components and return