[BUGFIX] Clean up message handling in install tool

The extension compatibility misuses the install tool message
system for its tests and hands over on-the-fly arrays instead
of proper message objects.
The patch moves the message creation to the controller and
hands them over to view instead.

Resolves: #66805
Releases: master
Change-Id: Icea9955e7e1206327f859abf4ec3bcada50a65e6
Reviewed-on: http://review.typo3.org/39279


Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>
Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>
Tested-by: Andreas Fernandez <typo3@scripting-base.de>