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
Rereference to the updated teiid runtime submodules

* Repoints the runtime submodules to the updated branches
Restrict the preview import vdb functionality to teiid 8+ servers

* Restores the merge method to Teiid 7 ExecutionAdmin, only allowing the
  import vdb functionality to 8+ servers.

* Merge should remain deprecated since it is only for backward compatibility
Merge pull request #105 from phantomjinx/master

Adds API for mergeVdbs in IExecutionAdmin
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.
TEIIDDES-1472 Need look-ahead when selecting Runtime Type value for an extension property in MED Editor
Installed a look-ahead proposal provider for the runtime type and for the translation (locale) combos. These
look-ahead proposals work when the combo has keyboard focus. Selection is changed to the proposal if the CR
key is hit.
Merge pull request #106 from elvisisking/TEIIDDES-1472

TEIIDDES-1472 Need look-ahead when selecting Runtime Type value for an extension property in MED Editor
Fix for possibility of keyword sharing in language syntax

* ISQLConstants
 * Can be used for SQL syntax and upper-case is the expected norm. Thus,
   the NULL keyword should be held in upper-case

* ISQLStringVisitor
 * Has no need to extend ISQLConstants since its implementations have
   access to their own syntax interfaces

* Synced with change in runtime-clients
TEIIDDES-1545 "WSDL to Relational" importer fields for Source and View Model Definition Name enter backwards in Windows
Fixed by only updating the text field if it had a different value than the model.
Merge pull request #108 from elvisisking/TEIIDDES-1545

TEIIDDES-1545 "WSDL to Relational" importer fields for Source and View Model Definition Name enter backwards in Windows