Interstellar update: new wide layout mode for computers/tablets, and redone profile editing settings

Features

• Profile editing is now on a separate screen and comes with options for deleting your avatar/banner and editing many of your account settings such as when you get notifications, whether to show NSFW content, if your subscriptions and followed users are public or not, etc.; by @olorin99.
• A new compact post layout is available for use and makes browsing the feed view a lot more readable on desktops, tablets, and wider screens in general. By default, it automatically detects whether the new "wide" layout should be used or not based on the available screen width, but you can also manually set the layout in the settings, under the general settings page.

Fixes

• Browsing with a guest account now correctly hides filter options in the feed mode.
• The create post button no longer shows for guest accounts.
• m.youtube.com now counts as a youtube video link.