ESM example - NaN values in partially-coherent report

[mrakitin]

Found in Sirepo by @robnagler - radiasoft/sirepo#811.

multiElectronAnimation.zip

[mrakitin]

Support files are in the repo mrakitin/sirepo_bugs@26a6c55.

[mrakitin]

Too many 1st priorities, reduce priority to 2nd. Will take care of it after other 1st priority issues are solved.

[mrakitin]

I think it may be fixed in the latest merge with Oleg's code.