Render producers list for a group

[enricostano]

We take in account the following attributes:

• can_edit: whether the producer has been created from the current group, for now we show editar
• isProvider: whether the producer can receive orders from the current group, for now we show pedir

  Dependency

https://github.com/coopdevs/katuma/pull/92

[andresgutgon]

I need this code. I'll cherry pick it here: https://github.com/coopdevs/katuma-web/pull/18