modify openid selector to not default to http:// for openid

ikiwiki doesn't care if the http:// is there, and it seems cleaner and less
annoying this way

underlays/openid-selector/ikiwiki/openid/openid-jquery.js

@@ -220,7 +220,7 @@ var openid = {
 		}
 		if (provider['name'] == 'OpenID') {
 			id = this.input_id;
-			value = 'http://';
+			value = '';
 			style = 'background:#FFF url('+this.img_path+'openid-inputicon.gif) no-repeat scroll 0 50%; padding-left:18px;';
 		}
 		html += '<input id="'+id+'" type="text" style="'+style+'" name="'+id+'" value="'+value+'" />' +