Revert "Complete .cke_iswidget logic removed; settings from ckeditor_properties"

This reverts commit f60e19a8e9d32fa5285fb4d070435c591ed0ecd4.
Revert "DIRTY SOLUTION: set editor height to 400px, hardcoded"

This reverts commit ccbb325daac2601f8fc44f00d20027abed1a614c.