First pass at changes to visualization widgets.
nanovisview.tcl use png icons.
visviewer.tcl change to sidebar layout
molvisviewer.tcl use png icons, fixed for sidebar layout.
heightmapviewer.tcl use png icons, fixed for sidebar layout.
flowvisviewer.tcl use png icons, fixed for sidebar layout.
resultviewer.tcl recognize flow data
field.tcl recognize unirect3d mesh.
field3dresult.tcl load FlowvisViewer? component description.
panes.tcl added horizontal panes. Need cursor fix. Must specify
correct cursor from options.
unirect2d.tcl added "axisorder" tag to specify order of field data.
Changed name to Unirect2d from UniRect2d.
unirect3d.tcl added "axisorder" tag to specify order of field data.
Right now, this is a test platform for me for flow
visualizations.
