[FIX] website_slides: clean some model-related parameters

Quiz questions and answers should be translatable as they are intended
for end users and are displayed in courses frontend. Some required fields
are also missing. Some docstrings are cleaned.

Commit linked to task ID 1941250 and PR #31272.

addons/website_slides/models/slide_question.py

@@ -8,14 +8,11 @@
 class SlideQuestion(models.Model):
     _name = "slide.question"
     _rec_name = "question"
-    _description = """
-        Question for a slide. A slide can have multiple questions and each question
-        must have at least 2 possible answers and only one good answer.
-        """
+    _description = "Slide Quiz Question"
 
     sequence = fields.Integer("Sequence", default=10)
-    question = fields.Char("Question Name", required=True)
-    slide_id = fields.Many2one('slide.slide', string="Slide")
+    question = fields.Char("Question Name", required=True, translate=True)
+    slide_id = fields.Many2one('slide.slide', string="Slide", required=True)
     answer_ids = fields.One2many('slide.answer', 'question_id', string="Answer")
 
     @api.constrains('answer_ids')
@@ -44,8 +41,9 @@ def _check_at_least_2_answers(self):
 class SlideAnswer(models.Model):
     _name = "slide.answer"
     _rec_name = "text_value"
-    _description = """Answer for a slide question"""
+    _description = "Answer for a slide question"
+    _order = 'question_id, id'
 
-    question_id = fields.Many2one('slide.question', string="Question")
-    text_value = fields.Char("Answer", required=True,)
-    is_correct = fields.Boolean("Is correct answer", default=False)
+    question_id = fields.Many2one('slide.question', string="Question", required=True)
+    text_value = fields.Char("Answer", required=True, translate=True)
+    is_correct = fields.Boolean("Is correct answer")