Added better docstrings to subpackages and cleaned out some places which were unclear.

evennia/players/__init__.py

@@ -1 +1,7 @@
+"""
+This sub-package defines the out-of-character entities known as
+Players.  These are equivalent to 'accounts' and can puppet one or
+more Objects depending on settings. A Player has no in-game existence.
+
+"""
 from players import DefaultGuest, DefaultPlayer