[BUGFIX] Wizard in HTML element moved to t3editor

If HTML element is used and t3editor is not
installed, an error is thrown.

Solution is to move the wizard code to t3editor
itself.

Change-Id: I967aac22a14bf0fc39e9c424398ac46ac913ce1f
Fixes: #33813
Releases: 4.7, 4.6, 4.5
Reviewed-on: http://review.typo3.org/8929
Reviewed-by: Francois Suter
Tested-by: Francois Suter
Reviewed-by: Georg Ringer
Tested-by: Georg Ringer