[2] As a user i want to filter articles by feed provider

Implement the applyFilterFeedProvider()-method in model. On method call, the filtered_article_list is empty. After calling the method it is supposed to be filled with the correct articles. They do not need to be sorted.

ToDo

• Implement the applyFilterFeedProvider()-method in model

Acceptance criteria

• Filtering works as intended

Effort:

2