Another build fix, PIL requires --allow-unverified.
Another build fix, PIL requires --allow-unverified.

john2x/webassets,john2x/webassets,heynemann/webassets,glorpen/webassets,aconrad/webassets,aconrad/webassets,florianjacob/webassets,scorphus/webassets,JDeuce/webassets,heynemann/webassets,wijerasa/webassets,aconrad/webassets,scorphus/webassets,glorpen/webassets,florianjacob/webassets,glorpen/webassets,wijerasa/webassets,JDeuce/webassets,heynemann/webassets