[7503] Implement proper (not 2 level limited) help.security set for chat commands and subcommands. Update some commands data.
* Now `command` table loading set data for any use subcommand levels
* Errors output for not existed in code commands at related data loading from table.
* Detail log level report outout about overwrited security level for loaded chat command data.
Using this functionality found and fixed/update data for `command` in mangos.sql
NOTE: some command security levels changed.
Thank you to benemorius for pointing to this security problem.