Change MessageWindow (i.e. the default goal messages) to use decorated messages instead of menus.

Currently, it opens a small window in the bottom right corner which blocks all player control and is not intuitive how to close. Now it's a message that will automatically disappear after a while (If the player hasn't finished reading, he can just click the goal icon again).
Raid: Fix multiplayer balloon deployment and remove balloons after intro.

The balloons serve no purpose here and the scenario should be kept as simple as possible.
Crash landing tweaked to serve as followup mission for raid.

Pilot name and color, mission access.