Allow the start_url member of the W3C manifest to be optional. If unspecified, the start_url is set to the target site's URL.
Allow the start_url member of the W3C manifest to be optional. If unspecified, the start_url is set to the target site's URL.

f2bo/ManifoldJS-lib,dragthor/ManifoldJS,BobJavascript/ManifoldJS,NoobsArePeople2/ManifoldJS,f2bo/ManifoldJS,ArchivedRepos/ManifoldJS,maitret/ManifoldJS,beni55/ManifoldJS,f2bo/ManifoldJS,AuyaJackie/ManifoldJS,f2bo/ManifoldJS-lib,manifoldjs/ManifoldJS