Basic SceneLinkTabW added to bottom Data Tables section

The lower UI fock widget was just for skinning information. This has been
expanded so that it incorporates other data tables by using a tabWidget
for multiple tabs.

The SceneLinkTabW has be added to Widgets.py. Currently setup with a
simple link of adata added.

Need to create a new class to pipe all the channel data into. Store these
channels in the main dataProcessor, and then use them to move changes
easily backwards and forwards from any table changes.
Basic structure for SceneLinkTabW implemented

The QTableWidget now basically populates by collecting the nodes,
associated databundles and then from them a list of all the active
AttributeControllers.

The data is feeding into the table well, but some adjustments need to be
made. The NodeID name is incomplete, and the row number is not updating
properly, unless the update button is clicked twice. Tweak these, and then
the RC menus need to be added so that the rest of the data can be added
smoothly.
Tweaks made to fixing deletion of WireGroups and SuperNodeGroups
NodeID values correctly listed in SceneLinkTabW

These values are now corrected. When the groupName of the Wiregroup or
SuperNodeGroup is changed (setName) then this also calls setDataBundleInfo
on the associated nodes, so that they are correctly updated.
DataServoProcessor added, and development of SceneLinkW RC Context Menus

Far too much has been written for one commit, but the main changes are
that the a DataServoProcessor has been created that inherits
DataProcessor, and overrides the DataBundles and AttributeConnectors to
the Servo versions, to allow all the functionality. This is really neat,
which is more than can be said for the SceneLinkTabW, which is working
great, but assumes that servo functinality is active, rather than being
inherited by a more advanced TableWidget with extra Servo functionality.

flipContextMenu and servoChannelContextMenu methods have been added. These
react to the RC hits on the TableWidget. Working well.

Now scene Node links and attribute links need to be implemented along with
the ability to manually edit min/max and Servo min/max values in the
table...