Migrating to d3 v4.
Migrating to d3 v4.

- indicator pies

#1026

rovats/waltz,khartec/waltz,kamransaleem/waltz,davidwatkins73/waltz-dev,rovats/waltz,khartec/waltz,khartec/waltz,rovats/waltz,davidwatkins73/waltz-dev,khartec/waltz,kamransaleem/waltz,rovats/waltz,kamransaleem/waltz,kamransaleem/waltz,davidwatkins73/waltz-dev,davidwatkins73/waltz-dev