Create Wallet Model

[iesteban]

Every user will have a wallet entity connected. The Wallet model can be taken from this one:
https://github.com/jpanganiban/django-pursed

I think the Transaction model should have also the source wallet of the transaction.

[sergimartnez]

@iesteban do you think is better to create the Wallet model class within the User models file, or do we need to create a whole new Model for wallet (new folder with all the required files)?

[iesteban]

It should be created like is shown here:

https://docs.djangoproject.com/en/1.10/intro/tutorial01/#creating-the-polls-app

And instead of poll wallet.

[pilamb]

@sergimartinez wallet should be modelled as a whole Django app. Separared from user , but related @iesteban points