Wrong locale email "New Application"

[sseerrggii]

Sometimes I recive this email in French app/mailers/organization_notifier.rb but my user (the user with email that I'm reciving) locale it's not French

Also It will be good to translate the subject "New Applitication"

[markets]

@sseerrggii lets keep it open for now (the subject is still hardcoded), but I think I solved this in #771. This is the commit: https://github.com/coopdevs/timeoverflow/pull/771/commits/0ecec0fc9a574c42f49893f2e3022dfc5f202135. Since we send those emails via bcc to multiple users, we need to use the same lang for all users, so I used the lang of the first manager (which make more sense compared to the previous implementation: use the lang of the last request received in the back-end).