Change playercounts for drunk, traitor, and wolf2

Per discussion in #wolfgame-dev, this commit changes the playercounts at
which drunk, traitor, and wolf2 are introduced. It removes drunk from 6p
and 7p games (moving it from 6 to 8), adds traitor to 8p and 9p games
(moving it from 10 to 8), and removes wolf2 from 8p and 9p games (moving
it from 8 to 10).

Or, in other words, it moves drunk later and switches traitor and wolf2.

Statistics on the effect of these two changes can be measured
independently, because they affect different ranges of games.

If this commit causes gameplay or other issues, feel free to revert it.
Make seer see werecrow as wolf instead of crow
Merge pull request #12 from skizzerz/seercrowfix

Make seer see werecrow as wolf instead of crow
Make traitor an invalid target for !kill. Closes #14
Check whether night is done after werecrow !observes. Closes #9
Simplify stasis logic for people who leave the channel.

Instead of setting make_stasis as soon as they leave, then setting it
again with a negative number if they rejoin, we can just set it when
they actually reach the timer and are killed. We were actually doing
*both* up to now (which was probably what was causing the double stasis
mentioned in issue #8), so I just removed the make_stasis calls when
people leave and come back, and kept the one when they get killed.
Exclude illegal_joins (stasised people) from the !ping list.

Pinging people who are in stasis to join games is both futile and
inflammatory. Closes issue #16
Move various in-channel messages to user notices

This commit moves the !votes and !stats rate limit warnings to user
notices intead of in-channel messages, to be consistent with the other
rate limit warnings and because those messages are usually just
pointless noise. It also moves the CARE_BOLD and CARE_COLOR messages
to user notices, because they're spammy and annoying and just make
things worse when they're in-channel.
Merge branch 'master' of github.com:LycanthropeTheGreat/lycanthrope
Oops, I fail at paying attention. Fixing last commit.
Change branch condition for checking if night is over, fixes #17

chk_nightdone used to check whether the number of people seen equals
the number of seers (and the same for harlot, etc.). This means night
times out if the seer (etc.) leaves after seeing but before night is
otherwise ended. This commit changes equals to >=, and swaps around the
wolf part of that condition so that it matches the other parts.
Merge branch 'master' of https://github.com/LycanthropeTheGreat/lycanthrope

Conflicts:
	modules/wolfgame.py