Add ordering to models. Advances BiscuIT-ng#54.

biscuit/apps/exlibris/models.py

@@ -37,6 +37,7 @@ class Book(SchoolRelated):
 
     class Meta:
         unique_together = [['school', 'title', 'author', 'edition', 'year']]
+        ordering = ['title', 'year', 'edition']
 
 
 class BookCopy(models.Model):
@@ -84,3 +85,6 @@ class BookCopy(models.Model):
 
     def is_deleteable(self) -> bool:
         return not self.borrow_count and not self.borrower
+
+    class Meta:
+        ordering = ['book__title', 'book__year', 'book__edition', 'copy_num']