App is not offering to retrieve all backup keys

[martgil]

Description:
The application imports only the first key associated with a single passphrase to input by the user even when the app detects multiple backup keys when login in.

Steps to reproduce:

1. Login to your account with multiple backup keys
2. Enter a passphrase for one of them and the app will take you to the inbox without letting you retrieve other keys.

Tested on version: 0.5.0
reference commit from the time being: 4162138

[tomholub]

Thank you - setting for later (consumer issue, currently focusing on enterprise)