Read data from 'Referenced' widget instead of tree view

[valearna]

'Referenced' contains the list of curated objects and it may be easier to get the count from there.

[valearna]

'Referenced' and the tree view are both reading data from the same API, but it is a different API endpoint than the one used by Wormicloud! This is the correct one: https://wormbase.org/rest/widget/paper/" + paper_id + "/referenced.

It seems that the aforementioned endpoint filters out genes added by the AFP from the counts...

[valearna]

@WBjae The revised counter is ready to test here: http://cervino.caltech.edu:3000/