Merge pull request openfoodfoundation#1775 from openfoodfoundation/tr…

…ansifex

Transifex

Updating translations for config/locales/fr.yml [skip ci]

Fix openfoodfoundation#1526: add descriptions for reports *before* th…

…ey are filtered

Add spanish translations manually

A change in the Transifex API made the automated commit fail. Hence
doing it manually here.

Merge branch 'transifex'

Updating translations for config/locales/nb.yml [skip ci]

Add plurals

Update contributing.md

Include link to discourse post: How to raise a github issue

Updating translations for config/locales/sv.yml [skip ci]

Run karma task only in test environment

and fails otherwise, as it needs the defaults defined in test environment