add USer Admin Page

src/elm/services/UserService.py

@@ -69,6 +69,8 @@ class UserService:
 
     async def is_login_valid(self, user_name: str, password_clear_text: str) -> bool:
         user = await self.get_user(user_name)
+        if not user:
+            user = await self.get_user(user_name.lower())  # Migrated users had all lowercase names
         user_password_hash = sha256(password_clear_text.encode(encoding="utf-8")).hexdigest()
         if not user:
             return False