Added the option to completely disable player book creation on the server. (This option is OFF by default)

To prevent players from writing books at all change
DisableBookWriting: false To DisableBookWriting: true

Added a command to reload the configuration without restarting the server, this command defaults to OP permission, but the permission node is:
IllegalStack.help (this is the only command in the plugin at the moment, when more are added more specific perms will be added as well)

To reload your config simply use /istack reload, using /istack with no arguments will give you a list of commands. (Currently only the reload command).