[PATCH] models: Series plural name is Series

[Stephen Finucane]

On Thu, 2017-05-04 at 11:45 +0200, Philippe Pepiot wrote:
> By default django use verbose_name + s which lead 'Seriess'
> displayed in admin interface.
> 
> Signed-off-by: Philippe Pepiot <philippe.pepiot at logilab.fr>

Reviewed-by: Stephen Finucane <stephen at that.guru>

...and applied.

Stephen