[8] As a user I want to have multiple filter options

Description

one Methode to call them all (filter methods)

• all (all article where show_in_main_feed = true)
• collections (based on feed_list)
• for each feed
• for each feed provider
• Keyword
• saved/bookmarks

ToDo

• Create structures to save the selected filter options
• Create refreshFilter()-method to update main view list
• Call refreshFilter()-method every time anything in the list was changed

Acceptance criteria

• Methods exist
• Is Nice

Effort:

8