put changes back in
Displays a warning when forcing CDAT_BUILD_MODE

If CDAT_BUILD_ESGF is enabled, then CDAT_BUILD_MODE gets forced to
"LEAN". This commit displays a warning when that happens.
Add Camera to saved state
Merge remote-tracking branch 'origin/vcs3D-fix-unexpected-error-884' into vcsDV3D-2.2-features
Hide z slider for 2D plots
Make zslider persistent value relative
merge master in this
added AnyEvent to see what is happening (not much on mac)

added prints and tried to send some click event but no luck so far
ok this works, needs clean up
ok not quite there... no left click segfaults
ok works on Mac
Merge branch 'master' into issue_691_interact_mac_broken
rendering the clickrenderer seg fault on mac if clicked before and resize, commenting out fixes it
works on Linux now
Merge branch 'vcsDV3D-2.2-features' into vcs3D-fix_z_axis_problems
Fix unrecognized hovmoller
Update DV3DPlot.py

commenting out print statement
@dlonie suggested changes
ok got all (?) of @dlonie things
removed a var that I created while trying some other method. Not needed