Add support for configuring stylesSet via System Settings
Add support for disabling plugins via System Settings.
Add support for enabling native spellchecker via System Settings.
Correctly handle Style Sets and update setting description.

Conflicts:
	core/components/ckeditor/lexicon/en/default.inc.php
Merge branch 'master' of github.com:danyaPostfactum/modx-ckeditor
Add toolbarGroups setting
Rebuild CKEditor itself
Add readme