Support new user creation from SMS

[lizzyaustad]

# TODO: support 'new' command for new members

If the request comes from SMS, then the format of data would look like this:

    {'linkId': 'xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx', 
    'text': 'NEW MEMBER first_name=example last_name=user phone=12345 [email protected] role=member coop=Co-Op 1', 
    'to': '<short code>', 
    'id': 'xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx', 
    'date': '2019-10-02 15:12:34', 
    'from': '+11234567890}

We will need to convert the information in the text key to look like this (including converting from role and co-op name to their respective ids):

   {'first_name': 'Example', 
    'last_name': 'User', 
    'phone': '12345', 
    'email': '[email protected]', 
    'role_id': '2', 
    'co_op_id': '2'}

Once the data is converted, the create_new_user method can be called to add the user to the database. If the user is added successfully, a text message should be sent back to the from user with the message:

Member has been created. To create a revolving fund for this user, text "NEW FUND user=[] balance=[balance] interest=[interest] start=[start date] end=[end date]"