* maps.ufo - formatting
* map [+village] update

* added alien spawnpoints in some tiles
* removed some lurking occurences of the maxlevel property
* removed leading newlines
* map [+tropic] added some alien spawnpoints
* map [+tower] reduced number of spawnpoints to 12 for mp-teams 2 and 3
* map [+city3] fixed spawnpoints issues

* reduced maxaliens property to a reasonable amount
* removed wip building from assembly