small refactoring on login function (default login is sent when none is

provided)

frontend-js/src/main/js/ServerConnector.js

@@ -872,6 +872,8 @@ ServerConnector.login = function(login, password) {
     if (login!==undefined) {
       params.login = login;
       params.password = password;
+    } else {
+      params.login = "anonymous";
     }
     return self.sendPostRequest(self.loginUrl(),params).then(function(content) {
       var obj=JSON.parse(content);

frontend-js/testFiles/apiCalls/user/login/login=anonymous&

+{"expires":{"year":3017,"month":0,"dayOfMonth":30,"hourOfDay":14,"minute":52,"second":45},"id":"FILE_MOCK_TOKEN_ID"}
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