Refactoring: Added interfaces, custom exceptions, UserManager unit tests, dependency injection/inversion; Regex match search by date, keywords

StudentHouseDashboard/Logic/IUserRepository.cs

@@ -0,0 +1,20 @@
+using Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Logic
+{
+    public interface IUserRepository
+    {
+        public List<User> GetAllUsers();
+        public User GetUserById(int id);
+        public User GetUserByName(string userName);
+        public List<User> GetUsersByPage(int p, int c);
+        public User CreateUser(string name, string password, UserRole role);
+        public void UpdateUser(int id, string name, string password, UserRole role);
+        public void DisableUser(int id);
+    }
+}