Fixed new JST tests: should pass on not-windows too
Fixed new JST tests: should pass on not-windows too

Using os.path.normpath so that test case will only see backslashes in
path on Windows.

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