* Fixed map server crashing upon level changes, thanks Akinari! (bugreport:7428)
* Fixed a couple minor issues with r17220 (incl. bugreport:7427).
* Added documentation and constants for costume slots where missing.
* Removed references to TXT save files in script_commands.txt.

git-svn-id: https://rathena.svn.sourceforge.net/svnroot/rathena/trunk@17221 54d463be-8e91-2dee-dedb-b68131a5f0ec