Adding i18n support.

[pdelboca]

This PR will add the Multilanguage support that comes integrated with django-cms.

Notes:

• LocaleMiddleware must come before django-cms ones sice it sets the language in the header (which the cms depends on)

Preview

simplescreenrecorder-2023-08-08_09.37.38.webm

[codecov-commenter]

Codecov Report

Patch and project coverage have no change.

Comparison is base (dc16de6) 89.14% compared to head (593b6c9) 89.14%.

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Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #939   +/-   ##
========================================
  Coverage    89.14%   89.14%           
========================================
  Files           92       92           
  Lines         1124     1124           
  Branches        47       47           
========================================
  Hits          1002     1002           
  Misses         120      120           
  Partials         2        2           

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