Develop -> Master merge, release v7.2.1

[mdorf]

• Fix: stale term-search cleanup before reindexing #290

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.21%. Comparing base (cdca8b6) to head (74da285).
⚠️ Report is 156 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #291      +/-   ##
==========================================
+ Coverage   80.11%   80.21%   +0.09%     
==========================================
  Files          84      100      +16     
  Lines        5880     6753     +873     
==========================================
+ Hits         4711     5417     +706     
- Misses       1169     1336     +167     

Flag	Coverage Δ
ag	80.14% <100.00%> (?)
fs	80.18% <100.00%> (?)
gd	80.15% <100.00%> (?)
unittests	80.21% <100.00%> (+0.09%)	⬆️
vo	80.12% <100.00%> (?)

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