Networking started
made join game screen
ServerMicropolis added
minor fixes

Serializability, NetworkFixes
minor fixes
Made Spectator Work!
made window visible
merged
merged w/ master
Merge branch '13_SpectatorMode'
fixed little error
Forschungsbalken hinzugefügt

Im Budget-Fenster gibt es jetzt einen Forschungsbalken
fixed .classpath
added the research tree code and inside the main game state