Improve localization of git activity stats

[lafriks]

As per comments on previous PR

[ngourdon]

LGTM

[codecov-io]

Codecov Report

Merging #6848 into master will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #6848      +/-   ##
==========================================
+ Coverage   41.18%   41.19%   +0.01%     
==========================================
  Files         423      423              
  Lines       58394    58394              
==========================================
+ Hits        24048    24056       +8     
+ Misses      31167    31159       -8     
  Partials     3179     3179

Impacted Files	Coverage Δ
modules/log/event.go	64.46% <0%> (-1.53%)	⬇️
routers/repo/view.go	43.03% <0%> (+1.01%)	⬆️
models/repo_list.go	67.89% <0%> (+1.05%)	⬆️
modules/process/manager.go	81.15% <0%> (+4.34%)	⬆️
models/unit.go	67.56% <0%> (+5.4%)	⬆️

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