Eclipse grid viewer

[HansKallekleiv]

Test plugin to visualize EGRID, INIT, RESTART with VTK.

Read from Roff:

      - page: Eclipse Grid Viewer
        content:
          - EclipseGridViewer:
              roff_folder: ../01_drogon_ahm/realization-0/iter-0/share/results/grids/
              roff_grid_name: geogrid

or from EGRID

      - page: Eclipse Grid Viewer
        content:
          - EclipseGridViewer:
              egrid_file: /scratch/fmu/course/01_drogon_ahm/realization-0/iter-0/eclipse/model/DROGON-0.EGRID 
              init_file: /scratch/fmu/course/01_drogon_ahm/realization-0/iter-0/eclipse/model/DROGON-0.INIT
              restart_file: /scratch/fmu/course/01_drogon_ahm/realization-0/iter-0/eclipse/model/DROGON-0.UNRST
              init_names:
                - PORO 
                - PERMX
                - PERMY
                - PERMZ
              restart_names:
                - PRESSURE
                - SWAT
                - SGAS 
                - SOIL

[anders-kiaer]

Superseded now by #1025 I think.