Implement grace period system for member dues management

- Add grace period logic for new members (1 month from join date)
- Enhance dues status computation with actual payment date validation
- Update member card to show grace period status with warning indicators
- Remove overdue dues banner from member list
- Add payment due date calculation in registration process
- Update email templates for improved member communication

pages/dashboard/member-list.vue

@@ -13,16 +13,6 @@
       </v-col>
     </v-row>
 
-    <!-- Overdue Dues Banner -->
-    <DuesOverdueBanner
-      :overdue-count="overdueCount"
-      :can-update-statuses="isAdmin"
-      :can-send-reminders="isAdmin || isBoard"
-      :refresh-trigger="overdueRefreshTrigger"
-      @view-overdue="viewOverdueMembers"
-      @send-reminders="sendDuesReminders"
-      @statuses-updated="handleStatusesUpdated"
-    />
 
     <!-- Search and Filter Controls -->
     <v-row class="mb-4">