Look explicitly into JSON payload vs .params

[jimallman]

This should fix the include_tree_in_synth and exclude_tree_from_synth methods on devtree.

[jimallman]

Confirmed, this is working now on devtree, see for example https://devtree.opentreeoflife.org/curator/study/edit/pg_2823?tab=home
It's a tiny pull request and should be easy to merge+deploy on master.

[snacktavish]

@jimallman Seems to be working on dev.... but despite update to production is not working there.
e.g. https://tree.opentreeoflife.org/curator/study/edit/ot_2262/?tab=home

[jimallman]

Interesting! I get a mysterious error on API response, but if I refresh the page, the page has apparently been included/excluded as it should. Will investigate further...