Update tests to craftbukkit v1_6_R2
Restructure handling of <players> args

- Players always given at the end of the command args.
- Handle shorthand and removing duplicate players centrally.
- To incorporate the 'no args will perform command on yourself' feature,
  `/ro op <players>` is moved to `/ro op add <players>`, as `/ro op`
  already has a different function.
Add help info to tab completion

Shows options, games, channels and player lists when certain commands
are tab completed, and shows the general help info for each command
when tabbing the first argument.
Add team player count to player list

- Teams with no players are not given a new line, so the results take
  up less room.
- Teams are sorted by the number of players on the team.
- Fix `/ro add player` not messaging sender response for team games.
Test deathmatch handles 500 players without error
Fix scores overview undefined var for team games
Fix tab complete errors

- Priority matches are completed using startswith, not just prepended
  to matches.
- /ro player remove doesn't check for team names.
- /ro player add matches channel players, not all online players.
Space out team player list
Use internal clock event to fire scoreboard events

- Users can testfor the 'pulse_ev' score, which is internally used
  as the clock to fire scoreboard events. This removes the need to
  specifically match the speed of the redstone pulse with the length
  of the events.
- Event_ticks option can only be set to an even number.
Add random score to players
Fix player add to team tab completion
Fix editscore bug when sender is command block
Reset fake team scores to remove from sidebar
Don't display player/team heading in scores
Fix sidebar not rebuilding to fit > 15 players
Make health accessible objective

And rank elimination players by health after eliminated order, lives
and kills.
Trigger scoreboard respawn event on match start
Fix elimination team scoreboard reset
Update setscoreboard error message
0.1.10