[8] As a user, I want feeds and feed providers to be saved instantly upon saving to never lose any changes

Use self for FeedProvider and parent_feed for Feed to call method

ToDo

Custom:

• Implement function saveFeedProvider(_ feed: NewsFeedProvider) in model
• Call method whenever any relevant attribute gets changed (Feed + FeedProvider)
• Call method as last action in original constructor (FeedProvider)
• Remove Feeds/Feed Providers from the original save method

Defaults:

• Report Changes in UML
• Report Changes in Wireframes

Acceptance criteria

Custom:

• Everything gets saved instantly

Defaults:

• Naming Convention for Classes, Functions and Variables are met
• Comments are sufficient

Effort:

8