Made the pregame countdown fade out only

Otherwise it seems shorter than it is. Also:
- Changed fade out behaviour to fade out for 1 second after the message
has expired rather than for the last second of the message's duration.
- Fixed a potential bug where the timer for the pregame would be
remembered where it shouldn't.
The publisher decided to shuffle stuff

Who knows why.
Merge pull request #33 from Person8880/develop

Fixed a few bugs/annoyances in the pregame plugin.