Fixed session bug, updated database, created show todos.

src/main/java/service/TaskService.java

@@ -17,6 +17,16 @@ public class TaskService {
         this.taskRepository = taskRepository;
     }
 
+    public ArrayList<Task> getTasks() {
+        try {
+            return taskRepository.getUserTasks();
+        } catch (Exception e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+
     public ArrayList<Task> getUserTasksFilterByDate(Date startDate, Date endDate) {
         try {
             return taskRepository.getUserTasks(startDate, endDate);