Server side :

* Trim password and login before instertion
	* Can use empty master key to see user passwords
	* Fix a bug : can't decode multiple queries from client

Client side :
	* Don't send empty username
	* Update README

server/ref/index.php

@@ -45,7 +45,8 @@ for ($i=0; isset($_POST["k$i"]); $i++)
 {
     $statement->bindValue(":login", $_POST["k$i"]);
     $result = $statement->execute();
-    $row = $result->fetchArray();
+    $row = $result->fetchArray(SQLITE3_ASSOC);
+    $result->finalize();
     if (isset($row["password"]))
     {
         echo "pass=" . $row["password"] . "\n";