Refactor card badge and multiselect template tags to properly implement and/or improve caching and context handling

- Updated `card_badge` and `card_multiselect` template tags to utilize `reverse_lazy` for URL resolution.
- Enhanced caching mechanisms in `card_badge.html` and `card_multiselect.html` to improve performance.
- Introduced a new template `_card_multiselect_options.html` for rendering multiselect options.
- Improved context management in `card_multiselect` to handle selected cards and dynamic placeholders.
- Added error handling for query hashing in `card_multiselect` to ensure robustness.
- Updated `trade_offer_tags` to optimize database queries using `select_related` for related objects.

trades/signals.py

@@ -1,7 +1,7 @@
 from django.db.models.signals import post_save, post_delete, pre_save
 from django.dispatch import receiver
 from django.db.models import F
-from trades.models import TradeOfferHaveCard, TradeOfferWantCard, TradeAcceptance
+from trades.models import TradeOfferHaveCard, TradeOfferWantCard, TradeAcceptance, TradeOffer
 from django.db import transaction
 from accounts.models import CustomUser
 from datetime import timedelta
@@ -12,6 +12,8 @@ from django.core.mail import send_mail
 from django.conf import settings
 from django.template.loader import render_to_string
 from django.contrib.sites.models import Site
+from django.core.cache import cache
+import logging
 
 POSITIVE_STATES = [
     TradeAcceptance.AcceptanceState.ACCEPTED,
@@ -178,7 +180,7 @@ def trade_acceptance_reputation_update(sender, instance, created, **kwargs):
     state transitions for TradeAcceptance.
     
     - THANKED_BY_BOTH: both the initiator and the acceptor receive +1 when transitioning
-      into this state, and -1 when leaving it.
+        into this state, and -1 when leaving it.
     - REJECTED_BY_INITIATOR: only the acceptor gets -1 when transitioning into it (and +1 when leaving it).
     - REJECTED_BY_ACCEPTOR: only the initiator gets -1 when transitioning into it (and +1 when leaving it).
     
@@ -259,4 +261,18 @@ def trade_acceptance_reputation_delete(sender, instance, **kwargs):
     if instance.state == TradeAcceptance.AcceptanceState.REJECTED_BY_ACCEPTOR:
         CustomUser.objects.filter(pk=instance.trade_offer.initiated_by.user.pk).update(
             reputation_score=F("reputation_score") + 1
-        )
+        )
+
+@receiver(post_save, sender=TradeOfferHaveCard)
+@receiver(post_delete, sender=TradeOfferHaveCard)
+@receiver(post_save, sender=TradeOfferWantCard)
+@receiver(post_delete, sender=TradeOfferWantCard)
+@receiver(post_save, sender=TradeAcceptance)
+@receiver(post_delete, sender=TradeAcceptance)
+def bubble_up_trade_offer_updates(sender, instance, **kwargs):
+    """
+    Bubble up updates to the TradeOffer model when TradeOfferHaveCard, TradeOfferWantCard,
+    or TradeAcceptance instances are created, updated, or deleted.
+    """
+    if instance.trade_offer:
+        instance.trade_offer.save(update_fields=['updated_at'])