Fixed issue where negative additive effect values weren't being displayed in the "view collection" page
Fixed issue where negative additive effect values weren't being
displayed in the "view collection" page

* wqflask/wqflask/templates/collections/view.html - Apparently the
correct way to check if a value can be cast to a float in Jinja2 is to
say "value != 0"; it previous said "value > 0" which exlcuded all
negative values

pjotrp/genenetwork2,genenetwork/genenetwork2,zsloan/genenetwork2,pjotrp/genenetwork2,zsloan/genenetwork2,genenetwork/genenetwork2,genenetwork/genenetwork2,pjotrp/genenetwork2,genenetwork/genenetwork2,zsloan/genenetwork2,pjotrp/genenetwork2,zsloan/genenetwork2,pjotrp/genenetwork2