Vote surrender uses NS2's concede messages/button

- Overrides it with the surrender plugin's settings and the surrender
button in the Shine vote menu still works, this just removes the double
vote.
- Also started on a 'readyroom' plugin, to disable spectator mode and
move people from the ready room onto a team.
Filled in the ready room plugin

- It can block the spectator mode and move idle players in the ready
room onto a random team (the team with fewest players mainly) after a
set time.
- It will prevent players from going back to the ready room for a set
amount of time after being forced onto a team.
- Also bumped some version numbers in the plugins. I'm not sure if
there's much point, but they're certainly not the first versions of them
anymore...