Ability to change the default feed

[GitKalle]

Summary

When the app starts I would like to see all my latest feeds without replies. Up to now the app starts the feeds with replies.

Basic example

Change the default feed. Two possible ways:

1. Long press of the relevant feed and add an option to set it as default. or
2. Change the order of the feed list and the feed on the top is the default.

Motivation

Speed up the use of the app. I don't need to change the feed every time I start the app.