cooperator : add dependency to email_template_config

[polchampion]

email_template_config adds the feature to remove the "force mail send" default parameter for mail templates.

Without this, payment reconciliations in Cooperators fail whenever there is an issue when sending the user portal invitation email. This is unpleasant for new implementation, when one wants to test the cooperator data before the go live, so before these emails are sent, and be able to reconcile share increases whose automatic email cannot be turned off.

The problem arose post migration to v14, since email_template_config hasn't been ported yet.

[polchampion]

@huguesdk I created this issue, but don't know what to do with it. Can it be referenced somewhere to be treated when we will port the module email_template_config to v16 ?

[polchampion]

@huguesdk en fait, je ne sais pas si ça doit être une dépendance au niveau du code, peut-être qu'il faut juste l'écrire dans nos fichiers todo d'implémentation... qu'en penses-tu ?