Refactor Discord member statistics handling and remove unused components

- Removed the `guild_member_stats` table and related logic from the database and models, as well as the associated webapp routes and templates.
- Cleaned up the Discord bot initialization by eliminating unused imports and functions related to member statistics.
- Updated logging configuration in `run-web.py` to streamline the startup process and improve thread management.

webapp/settings.py

@@ -63,12 +63,6 @@ PAGE_METADATA = {
 		"description": "Historique de modération Discord",
 		"icon": "shield"
 	},
-	"discord_members": {
-		"label": "Membres Discord",
-		"category": "moderation",
-		"description": "Liste des membres, activité et sanctions",
-		"icon": "users"
-	},
 	"twitch_moderation": {
 		"label": "Modération Twitch",
 		"category": "moderation",
@@ -164,7 +158,6 @@ PAGE_KEYS = [
 	("protondb", "ProtonDB"),
 	("freeloot", "FreeLoot"),
 	("moderation", "Modération Discord"),
-	("discord_members", "Membres Discord"),
 	("users", "Utilisateurs"),
 	("settings", "Paramètres"),
 ]