fix translate keep_formatting

[noviluni]

When parsing a string it is "translated". When doing it, the commas are missed, and because of that some date formats in the base-formats parser doesn't work.

Before this change:

>>> dateparser.parse('December 04, 1999, 11:04:59 PM', settings={'PARSERS': ['base-formats']})

It should work because '%B %d, %Y, %I:%M:%S %p' is the first date format when trying with `base-formats, but it doesn't.

After this change:

>>> dateparser.parse('December 04, 1999, 11:04:59 PM', settings={'PARSERS': ['base-formats']})
datetime.datetime(1999, 12, 4, 23, 4, 59)

[Gallaecio]

Nice!

[codecov]

Codecov Report

Base: 95.23% // Head: 96.89% // Increases project coverage by +1.66% 🎉

Coverage data is based on head (4596ad3) compared to base (6dc38bb).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #720      +/-   ##
==========================================
+ Coverage   95.23%   96.89%   +1.66%     
==========================================
  Files         302      307       +5     
  Lines        2560     3774    +1214     
==========================================
+ Hits         2438     3657    +1219     
+ Misses        122      117       -5     

Impacted Files	Coverage Δ
dateparser/languages/locale.py	98.72% <100.00%> (+0.06%)	⬆️
dateparser/date_parser.py	100.00% <0.00%> (ø)
dateparser/data/__init__.py	100.00% <0.00%> (ø)
dateparser/utils/strptime.py	100.00% <0.00%> (ø)
dateparser/calendars/hijri.py	100.00% <0.00%> (ø)
dateparser/search/__init__.py	100.00% <0.00%> (ø)
dateparser/calendars/jalali.py	100.00% <0.00%> (ø)
dateparser/languages/loader.py	100.00% <0.00%> (ø)
dateparser/languages/__init__.py	100.00% <0.00%> (ø)
dateparser/data/languages_info.py	100.00% <0.00%> (ø)
... and 224 more

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.

[noviluni]

@Gallaecio maybe we don't need this 🤔

please, take a look to this: #721

[noviluni]

Even if we decided to remove the base-formats parser (#721), I will keep this PR open to check if this is affecting the custom-formats parser. From my first attempts, it seems that the custom-formats doesn't take into account commas, etc. so we could consider that it's working wrongly. I will investigate this further.