GitLab

Original commits:

* fix:command player said to server won't be shown at chat history

* Update ChatManager.java

Fix commands in party chat, re-add optional positional item quantity to give command, error out and print usage if excess arguments given to give command

Signed-off-by: Jaida Wu <mlgmxyysd@meowcat.org>

Added player "Help" command, added server "sendmsg" command, changed getAcccountByPlayerID to public in DatabaseHelper, and allowed player commands to be submitted with "/" and "!"