把未登录用的username默认值加回来了

免得在没选择用户的情况下进入projects页面出问题

src/main/java/com/web/web_assignment/ProjectBean.java

@@ -22,7 +22,7 @@ public class ProjectBean implements Serializable {
     private int projectIdx;
     private Project project; // Current project being worked on
     private UserInfo userInfo; // User info for the current user
-    private String username;
+    private String username = "admin";
     private String password;
     private Boolean isLoggedIn = false;
     public String projectKeywords = ""; // String to hold project keywords