Add gitignore
Change outdated in-game messages
Stop displaying previous scores with match-on flag
New "rev_rank" score and "ranking" becomes "rank"

Would rather not change the scoreboard names, but "rf_team_ranking" is
15 characters long, and the objective name limit is 16 characters, so
the inverse rank objective name has to be "rank", not "ranking", and
it's simpler if both names follow the same format.

New objective names in the future must be as short as possible, to avoid
this problem.
Player command now notes offline players

And the "(NR)" notation is replaced with an asterisk.
Tidy some user-facing messages

- s/gladiator had/gladiator has.
- Remove some of the "use x command" message, they clutter chat.
- Change styling for score updates.
- Remove some tab completion info.
Stop treating all dead players as gladiators

This was stupid. Stops the extra "foo is no longer a gladiator"
messages.
1.2.0