Update wording to use shipp tool and turn download on by default

[r-ash]

Description

This PR updates wording for SHIPP tool (was previously called AGYW) and enables it by default. Leaving the feature switch in for the time being just in case any issues and we want to turn it off again.

Note this doesn't work with Malawi test data because IDs in test data have been modified from their real ID.

This is in draft until we get the go ahead from science to deploy this.

Type of version change

Patches

Checklist

• I have incremented version number, or version needs no increment
• The build passed successfully, or failed because of ADR tests

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99%. Comparing base (f46238a) to head (14bbd7f).

Additional details and impacted files

@@           Coverage Diff            @@
##             master    #947   +/-   ##
========================================
  Coverage        99%     99%           
  Complexity      422     422           
========================================
  Files           248     248           
  Lines         20570   20570           
  Branches       2294    2291    -3     
========================================
  Hits          20400   20400           
  Misses          128     128           
  Partials         42      42           

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