#15 rendering of cells for nonexistent data

[Andy Deans]

it would clean up the appearance if data cells for
which there was no data were not rendered. E.g.:
/projects/12/specimen/show/313?target=show
also
/projects/39/lots (no identifiers, but column is still
there)

I also understand the importance of maybe having those
cells rendered anyway (so you can see which data are
missing?), but would be nice to have the option of
blocking them.

[Matt]

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This is likely better dealt with by generating some better search functionality.