Update Erik's staticfiles code for version support.
Update Erik's staticfiles code for version support.

This is blind-coding, I only hope it works.

aconrad/webassets,glorpen/webassets,scorphus/webassets,florianjacob/webassets,john2x/webassets,aconrad/webassets,john2x/webassets,heynemann/webassets,0x1997/webassets,0x1997/webassets,aconrad/webassets,JDeuce/webassets,glorpen/webassets,heynemann/webassets,glorpen/webassets,wijerasa/webassets,heynemann/webassets,florianjacob/webassets,scorphus/webassets,wijerasa/webassets,JDeuce/webassets