administration.lua: Added antiflood flag.

bible.lua: Some better error handling.
hearthstone.lua: Corrected help message.
utilities.lua: Added string:index() to succeed get_word().

utilities.lua

@@ -19,6 +19,16 @@ get_word = function(s, i)
 
 	return t[i] or false
 
+end
+
+ -- Like get_word(), but better.
+ -- Returns the actual index.
+function string:index()
+	local t = {}
+	for w in s:gmatch('%g+') do
+		table.insert(t, w)
+	end
+	return t
 end
 
  -- Returns the string after the first space.