fix url rewriting

(\?.+) already captures the question mark so it's not needed in the replaced string.
this actually made the `page` GET parameter be `?page` because the url wound up being `??page=foo`.

config/50-raspap-router.conf

@@ -3,7 +3,7 @@ server.modules += (
 )
 
 $HTTP["url"] =~ "^/REPLACE_ME/(?!(dist|app|ajax|config)).*" {
-    url.rewrite-once = ( "^/REPLACE_ME/(.*?)(\?.+)?$"=>"/REPLACE_ME/index.php/$1?$2" )
+    url.rewrite-once = ( "^/REPLACE_ME/(.*?)(\?.+)?$"=>"/REPLACE_ME/index.php/$1$2" )
     server.error-handler-404 = "/REPLACE_ME/index.php"
 }