Add missing translations for GC configuration

[Roshyo]

Fixes #208

[codecov]

Codecov Report

Merging #218 (9ee8665) into 0.12.x (dbff8f1) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             0.12.x     #218   +/-   ##
=========================================
  Coverage     49.73%   49.73%           
  Complexity      528      528           
=========================================
  Files           102      102           
  Lines          1687     1687           
=========================================
  Hits            839      839           
  Misses          848      848           

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