[BUG] fix public adventure page (#4900)

**Description**
The adventures table requires the `public` field to be a boolean. This fixes the issue.

**How to test**
- go to the `for-teachers` page
- click on  `public adventures`
- everything should work; also on alpha!

translations/ar/LC_MESSAGES/messages.po

@@ -1260,6 +1260,9 @@ msgstr "ليس لديك حساب؟"
 msgid "no_accounts"
 msgstr "لا يوجد حسابات ليتم انشاءها."
 
+msgid "no_adventures_yet"
+msgstr "لا يوجد مغامرات عامة بعد..."
+
 #, fuzzy
 msgid "no_certificate"
 msgstr "This user hasn't earned the Hedy Certificate of Completion"
@@ -1512,6 +1515,9 @@ msgstr "هل تريد الإنضمام الى هذا الصف؟"
 msgid "public"
 msgstr "Public"
 
+msgid "public_adventures"
+msgstr "المغامرات العامة"
+
 msgid "public_invalid"
 msgstr "اختيار الاتفاقية هذا غير صالح"
 
@@ -2178,12 +2184,6 @@ msgstr "اختر العلامة"
 msgid "Unused Variable"
 msgstr "You defined the variable {variable_name} on line {line_number}, but you did not use it."
 
-msgid "no_adventures_yet"
-msgstr ""
-
-msgid "public_adventures"
-msgstr ""
-
 msgid "title_public-adventures"
 msgstr ""
 

translations/en/LC_MESSAGES/messages.po

@@ -1025,7 +1025,7 @@ msgid "no_accounts"
 msgstr "There are no accounts to create."
 
 msgid "no_adventures_yet"
-msgstr ""
+msgstr "There are no public adventures yet..."
 
 msgid "no_certificate"
 msgstr "This user hasn't earned the Hedy Certificate of Completion"
@@ -1256,7 +1256,7 @@ msgid "public"
 msgstr "Public"
 
 msgid "public_adventures"
-msgstr ""
+msgstr "Public adventures"
 
 msgid "public_invalid"
 msgstr "This agreement selection is invalid"

website/database.py

@@ -597,7 +597,7 @@ def batch_get_adventures(self, adventure_ids):
         return ADVENTURES.batch_get(keys) if keys else {}
 
     def get_public_adventures(self):
-        return ADVENTURES.get_many({"public": 1})
+        return ADVENTURES.get_many({"public": True})
 
     def delete_adventure(self, adventure_id):
         ADVENTURES.delete({"id": adventure_id})