learning nuggets: fix capitalization of role (#39)

Author: partizipation

apps/learning_nuggets/templatetags/learning_nuggets_tags.py

@@ -3,19 +3,21 @@
 
 register = template.Library()
 
+
 @register.simple_tag
 def get_first_nugget_image(nugget, rendition_spec):
     """
     Gets the first image from a nugget's content StreamField
     """
     for block in nugget.specific.content:  # Make sure to use .specific
-        if block.block_type == 'learning_nugget':
+        if block.block_type == "learning_nugget":
             # Adjust this based on your actual block structure
-            image = block.value.get('image') or block.value.get('thumbnail')
+            image = block.value.get("image") or block.value.get("thumbnail")
             if image:
                 return get_rendition_or_not_found(image, rendition_spec)
     return None
 
+
 @register.simple_tag
 def get_permission(permission_level):
     permissions = {
@@ -27,9 +29,8 @@ def get_permission(permission_level):
 
 
 @register.simple_tag
-def get_permission_display(permission_level):
-    """For display purposes only - returns capitalized version"""
-    return permission_level.title()
+def get_permission_display(value):
+    return value[0].upper() + value[1:] if value else value
 
 
 @register.filter(name="filter_by_block_type")