Fix people tables crashing if somebody didn't fill in the form

[krzys-h]

The admin views really need better tests, but let's just hotfix prod for now...

Closes #630

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This change is 

[codecov[bot]]

Codecov Report

Merging #632 (e90c6dc) into master (08bbe7f) will not change coverage. The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #632   +/-   ##
=======================================
  Coverage   84.78%   84.78%           
=======================================
  Files          15       15           
  Lines        2445     2445           
=======================================
  Hits         2073     2073           
  Misses        372      372           

Impacted Files	Coverage Δ
wwwapp/views.py	80.19% <100.00%> (ø)

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