Fix login, root route, hero redirect and game page API handling

public/login.html

@@ -15,7 +15,7 @@
       <label for="username">Username</label>
       <input type="text" id="username" name="username" required minlength="3" maxlength="20" autocomplete="username">
       <label for="password">Password</label>
-      <input type="password" id="password" name="password" required minlength="8" maxlength="72" autocomplete="current-password">
+      <input type="password" id="password" name="password" required maxlength="72" autocomplete="current-password">
       <button type="submit">Login</button>
     </form>
     <p class="redirect">Don't have an account? <a href="/register.html">Register</a></p>