Fix gzip filter import order.
Fix gzip filter import order.

This just broke on Python 2.

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