Implement permissions system
Mark internal methods private
Add command permission to the request handler for plugins
Add an easy way for handling permissions in the APIConnector
Unit tests for the permissions system and a couple bug fixes
Minor code cleanup in the permissions
Implement groups into the permissions system
Update permissions unit tests
Set success to true in the whois processor
Update to the new plugins system
Merge branch 'master' of github.com:PolymorphicBot/PolymorphicBot

Conflicts:
	lib/src/plugins/handler.dart