Fix notifications on the dashboard

• Notifications should be ordered new → old (https://edugit.org/AlekSIS/official/AlekSIS-Core/-/blob/master/aleksis/core/views.py#L188)
• a notification doesn't have an app attribute, it is called sender (https://edugit.org/AlekSIS/official/AlekSIS-Core/-/blob/master/aleksis/core/templates/core/index.html#L88)

added part::frontend type::bug labels

assigned to @hansegucker

created merge request !785 (merged) to address this issue

mentioned in merge request !785 (merged)

marked the checklist item a notification doesn't have an app attribute, it is called sender (https://edugit.org/AlekSIS/official/AlekSIS-Core/-/blob/master/aleksis/core/templates/core/index.html#L88) as completed

marked the checklist item Notifications should be ordered new → old (https://edugit.org/AlekSIS/official/AlekSIS-Core/-/blob/master/aleksis/core/views.py#L188) as completed

closed with merge request !785 (merged)

mentioned in commit 4ac5f7ad