[ADMIN] new messages in config file : cleared_warnings, cleared_warnings_for_all, warn_too_fast for commands !warn and !clear.
[ADMIN] Settings warn:warn_delay, warn:instant_kick_num and warn:alert_kick_num are now validated when the plugin config file is loaded and default values applied if there are any errors.
[TESTS] Added tests for commands !warn and !clear
[DOC] Added user doc for commands !clientinfo and !clear
[DOC] Added default command level and alias info to commands for the admin plugin user doc