concrete5/concrete5-5.7.0 — pull request #1291 by mlocati (2014-10-07 16:22:05+00:00)
Title: Fix htmlblock clipboard

Html block breaks the clipboard panel.
Steps to reproduce:
1. copy an html block to the clipboard
2. try to add the copied block
3. when concrete5 loads the Clipboard panel the server returns `Class 'HtmlBlockController' not found`

This pull request fixes thit problem.