Prevent spectator interaction in some circumstances. Fixes #167
Prevent breaking boats and minecarts
Merge pull request #168 from frymaster/interact-fixes

Prevent spectator interaction in some circumstances. Fixes #167
Fix indentation (no code changes)
Interacting spectators can still break vehicles. Closes #167
Different way of handling cancelled and completed countdowns. Not sure if better or not. Closes #170
Update the player list (tab list) only when needed.
Merge remote-tracking branch 'martin/master'