server: remove spaces from message sender names

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
server: fix regular save

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
server: save game on server close

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
Merge branch 'master' of http://github.com/xymus/pycaptain