Fixes a performance issue with activity records
Fixes a layout issue

In the backoffice, when adding media to a project, more than two elements was
causing the layout to render badly.
Allows to upload videos from youtube or vimeo
Fixes an error generating data_denormalization rows
Renames some fields in exported files
Adds embed map link to countries orgs and sectors
Allows to manage multi-user per organization
Fixes a bug counting countries per site
Fixes a bug counting countries per site
Implements reset password functionality
Fixes countries column in admin project list
Adds some tweaks in password reset mails
Merge branch 'master' into staging
Adds a task to know who hasn't logged in lately

Adds a task to send an email to all users who haven't logged in the app in
the last six months
Merge branch 'master' into staging
Adds a flash notice when an entity is persisted
Merge branch 'master' into staging
Adds staging environment files
Merge branch 'master' into staging
Makes deploy handle the new staging env