Update 1.3.4i

- Fixed display issues with the on-screen button prompts in tutorials.
- Prevent switching to a campaign the user doesn't own by using the reset mission progress menu.
- Fixed a bug in the first mission where the rivals could speed ahead.
- Fixed being able to skip the intro in missions.
- Editor: Reverse zig zag direction is now ctrl+shift+r instead of ctrl+alt+r.
- Fixed a bug where the quit-without-saving prompt could be active but invisible.