TEIIDDES-1913 Teiid Connection Importer now checking types which cannot be imported
TEIIDDES-1887 Deploy and execute VDB throws exceptions if no server is defined
Merge pull request #254 from mdrillin/TEIIDDES-1913

TEIIDDES-1913 Teiid Connection Importer now checking types which cannot be imported
Merge pull request #255 from mdrillin/TEIIDDES-1887

TEIIDDES-1887 Deploy and execute VDB throws exceptions if no server is defined
Provides clean-up procedures for downloaded dependencies

* build.xml
 * Provides clean target for removing the maven downloaded libraries

* pom.xml
 * Adds in clean plugin for removing the downloaded libraries while
   performing a maven clean.
Includes the modeshape ddl jars back into the codebase

* Ensures the versions of the jars are compatible with product releases

* Disables maven and ant dynamic downloading of jars
Updates teiid 8.4.x submodule

* Updates merged into teiid 8.4.x client
Fixed comment format error in pom.xml
Ensures browse button is correctly disabled in JDBC import wizard

* When the model name is disallowed to be edited, its accompanying browse
  button should be disabled as well.
WIP TEIIDDES-1917: Fixes handling deletion of read-only resources

* Rather than disable delete, rename and move actions if resource is
  read-only, let the refactor wizards handle it.

* If running rename or move, a dialog should be displayed stopping the user
  going any further due to the resource being read-only

* If running any refactoring and a related resource is read-only then the
  dialog will also be displayed

* AbstractRefactorAction
 * Removes restriction on enablement of action due to read-only resources

* RefactorResourceUtils
 *