Deal with box.com changing the url of their webdav endpoint.

Use new url when making new remotes.

Transparently rewrite old url to new for existing remotes.

Assistant/WebApp/Configurators/WebDAV.hs

@@ -73,7 +73,7 @@ postAddBoxComR = boxConfigurator $ do
 				[ configureEncryption $ enableEncryption input
 				, ("embedcreds", if embedCreds input then "yes" else "no")
 				, ("type", "webdav")
-				, ("url", "https://www.box.com/dav/" ++ T.unpack (directory input))
+				, ("url", "https://dav.box.com/dav/" ++ T.unpack (directory input))
 				-- Box.com has a max file size of 100 mb, but
 				-- using smaller chunks has better memory
 				-- performance.