Updated Mobile Vikings msisdn_list API

test.py

import requests
r = requests.get('http://localhost:8000/api/2.0/basic/msisdn_list.json?alias=1', auth=('test', 'test'))
print r.content
## OUT
#[
#    {
#        "msisdn": "+32470046092",
#        "alias": "Test Jumbo"
#    },
#    {
#        "msisdn": "+32486774093",
#        "alias": "Test Classic"
#    },
#    {
#        "msisdn": "+32489922496",
#        "alias": "Test Medium"
#    },
#    {
#        "msisdn": "+32489922497",
#        "alias": "Test Data-only"
#    }
#]