Remove Teiid View and add Servers View to the Designer perspective

* The original Teiid View is no longer required as all its content is
  available from the servers view.

* org.teiid.designer.ui/plugin.xml
 * Adds the Servers View to the stack of the Problems View in the perspective
Merge pull request #103 from phantomjinx/master

Removal of the original Teiid View