added db cleanup script

scripts/database_cleanup.py

@@ -0,0 +1,29 @@
+from pymongo import MongoClient
+
+client = MongoClient('localhost', 27017)
+db = client['haha-no-ur']
+col = db['users']
+
+user_ids = col.find().distinct('_id')
+total = len(user_ids)
+i = 1
+
+for user_id in user_ids:
+    user = col.find_one({'_id': user_id})
+    album = user['album']
+    for card in album:
+        card.pop('rarity', None)
+        card.pop('attribute', None)
+        card.pop('release_date', None)
+        card.pop('round_card_image', None)
+        card.pop('round_card_idolized_image', None)
+        card.pop('name', None)
+        card.pop('year', None)
+        card.pop('main_unit', None)
+        card.pop('sub_unit', None)
+
+    col.update({'_id': user_id}, {'$set': {'album': album}})
+    print(str(i) + '/' + str(total))
+    i += 1
+
+print('done')