[COMPLETED] Multi-accounts#47

The idea is to be able to easily navigate between several companies with the same users. There is a need for :

• holdings or portfolio companies having several entities;
• accountants having lot of customers.

Currently, we have as many users as we do have companies. This will quickly become difficult to manage and unpleasant.

Requirements

• If the user is linked to several accounts, he must have (and see) the possibility to change context (=change company).
• We retrieve companies’s logo