Use /headerapp as endpoint

[Brawl345]

Tagesschau.de uses https://www.tagesschau.de/ipa/v1/web/headerapp/ as endpoint for the stuff shown in the header. Parsing it is straightforward, since it has a breakingNews object if there are any. Attached are samples with and without breaking news.

Pro:

• Parsing it is way faster, since it's so small
• Also easier to parse since it has less elements
• There were times when the current endpoint broke (wrongly encoded JSON)
• Some breaking news are not distributed through the current endpoint (the one the app uses) so the bot "misses" some breaking news (especially if one follows directly after another) (this one was missed f.e.)

Contra:

• Needs to be tested of course!

Attachements (rename to JSON):

• headerapp-with-breakingNews.json.txt
• headerapp-without-breakingNews.json.txt