Refactor and remove tests, update models and views

- Deleted all test files in accounts and twitch apps to clean up the codebase.
- Updated the DropCampaign, Game, Organization, DropBenefit, TimeBasedDrop, and DropBenefitEdge models to include database indexing for improved query performance.
- Modified the DropCampaignListView and GameDetailView to remove unnecessary status filtering and streamline campaign retrieval logic.
- Enhanced the campaign detail template to properly format campaign descriptions.
- Adjusted the import_drop_campaign management command to increase default worker and batch sizes for improved performance.
- Cleaned up the admin configuration for DropCampaign and TimeBasedDrop models.

templates/twitch/campaign_detail.html

@@ -17,7 +17,7 @@
              src="{{ campaign.image_url }}"
              alt="{{ campaign.name }}">
     {% endif %}
-    <p>{{ campaign.description }}</p>
+    <p>{{ campaign.description|linebreaksbr }}</p>
     <p>
         Start:
         {{ campaign.start_at }}