//Method: POST
//Form: encoded=[none,base64], data;
//Redirect: (encoded=none) /woo/bin/treehole/item/[rowid].txt;
//Redirect: (encoded=base64) /woo/bin/treehole/raw/[rowid].bin;

//Method: POST
//Header: "X-With"!=NULL
//Form: encoded=[none,base64], data;
//Return: {"rowid": "[rowid]"}