Mainly transifex issues but also some errors found through 'grep' checks.
Fix typos and obscure english strings in xml contents, fields strings/helps, some docstrings, ...
ensuring correct translations base (and fallback when translations isn't available).
closesodoo/odoo#57276
X-original-commit: 4214f05d454bca2b60fda3a288d529c098e84f77
Related: odoo/enterprise#13053
Signed-off-by: Martin Trigaux (mat) <mat@odoo.com>
Signed-off-by: Victor Feyens (vfe) <vfe@odoo.com>