Node and Edge tables disappear

[jdanish]

If you load a network and click on the node or edge table they appear as expected. Then, click on a node in the graph to select it. If you now click on the node or edge tab the tables are empty.

[benloh]

Actually I think this is an error where reselecting a nodetable or edgetable does not update the data.

[benloh]

Degrees seem to not update either...

[benloh]

This was being caused by the bMarkedNode optimization skipping D3DATA updates. NodeTables and EdgeTables wouldn't re-render themselves if a node was selected.

The bMarkedNode optimization to skip table updates when a node is selected would also prevent the tables from rendering when switching tab panels.

If it's necessary to skip a render on selection, the check should be made on selection state.

Hopefully with the table optimizations this is no longer necessary.

Fixed with 0e4a15f
See also #136.