i18n: message catalogs not being compiled due to "fuzzy"

[lnielsen]

Package version (if known): 1.3.0

Describe the bug

The distributed package on PyPI doesn't compile the message catalog of most languages (i.e we're lacking the .mo file). This is due to fuzzy being included in the messages.po.

Example of a good messages.po which does not include "fuzzy" and where the .mo file is correctly compiled.

Screenshot

Screenshot from files included in the PyPI distribution:

[libremente]

@lnielsen are those strings correctly reviewed?
#, fuzzy is the mark that gettext uses to determine that a translation content has to be reviewed. While this mark is there, the translation won't show up in run-time.
For example, in the Italian case I can see that 0% of the translations are reviewed and this explains the #fuzzy parameter being set

Ref: https://docs.transifex.com/formats/gettext#fuzzy-matches

[lnielsen]

Note for the coming sprint:

• All Invenio v3.4 modules should be checked. See list of modules in setup.py - https://github.com/inveniosoftware/invenio/blob/master/setup.py