Fix extraction of translation messages by Babel

[lw]

A directory was missing.

We could honestly just use **.py to extract from all Python files in the repo rather than listing all directories individually. I don't think we would have that many false positives (possibly none at all). I think I originally listed the directories because that was what we were doing before adopting Babel and I wanted to have the files processed in the same order to reduce the diff to the cms.pot file, which however ended being quite large regardless.

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This change is 

[codecov]

Codecov Report

Merging #1047 into master will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1047      +/-   ##
==========================================
- Coverage   61.98%   61.96%   -0.03%     
==========================================
  Files         227      227              
  Lines       16405    16405              
==========================================
- Hits        10169    10165       -4     
- Misses       6236     6240       +4

Flag	Coverage Δ
#functionaltests	46.08% <ø> (-0.06%)	⬇️
#unittests	43.13% <ø> (-0.02%)	⬇️

Impacted Files	Coverage Δ
cms/io/PsycoGevent.py	65.71% <0%> (-2.86%)	⬇️
cms/io/priorityqueue.py	92.7% <0%> (-2.19%)	⬇️
cms/server/admin/handlers/task.py	39.84% <0%> (-1.18%)	⬇️
cms/db/base.py	82.97% <0%> (-1.07%)	⬇️
cms/service/ProxyService.py	57.44% <0%> (-1.07%)	⬇️
cms/server/admin/handlers/dataset.py	24.76% <0%> (-0.93%)	⬇️
cms/service/workerpool.py	62.22% <0%> (-0.56%)	⬇️
cms/grading/Sandbox.py	67.87% <0%> (-0.37%)	⬇️
cms/io/rpc.py	91.46% <0%> (-0.35%)	⬇️
cms/service/esoperations.py	78.72% <0%> (ø)	⬆️
... and 5 more

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[stefano-maggiolo]

I think the reason we didn't want **py is because of the directory created by setup.py?

Also: is it possible that when I regenerated the po I also deleted some of the existing translation due to this bug? Can you check and if so restore the state of before?

Reviewable status: 0 of 2 files reviewed, all discussions resolved

[stefano-maggiolo]

Reviewed 2 of 2 files at r1.
Reviewable status: complete! all files reviewed, all discussions resolved

[lw]

Ok, I will leave the explicit listing of the directories.

I didn't understand what you're referring to: you updated the .pot file, which I regenerated in this PR, but you didn't touch the .po files. (In fact they haven't been updated in at least 6 month, whereas the pot with the missing strings was generated just one month ago). So I don't think any translation was lost due to this issue. Moreover, as we saw in #1045, translations for messages that disappeared from the pot are just commented out, not removed.

Reviewable status: complete! all files reviewed, all discussions resolved