Fixes: The comparative views are not updated when time is changed

The comparative views were updated only when another 3D View existed.

Change-Id: I1199d38bace93c189fc53c00910822e7bb49ef5d
Add vtkEnsembleReader for reading an ensemble of simulations.

Change-Id: I7d1cdcefd08b70e1810c05113d4fa6e0841a6b3e
Refactor vtkFileSeriesReader to use vtkMetaReader.

Change-Id: I12ebf1c085a44d61681909109680cdf63c1ab373
Update link to new VisItBridge.

VisItBridge updates proxy xmls for rename
vtkSIFileSeriesReaderProxy to vtkSIMetaReaderProxy.

Change-Id: I224f91b8c65e20e1f3f5d5b68fd2825c4ba923a5
Merge topic 'ensemble-reader' into next

801f82aa Update link to new VisItBridge.
35931d5c Refactor vtkFileSeriesReader to use vtkMetaReader.
67f8a2eb Add vtkEnsembleReader for reading an ensemble of simulations.
a7c5caa9 Fixes: The comparative views are not updated when time is changed