ENH: Associate icon with the new Slice view layouts

This is a follow-up of previous commit r22385

See #2384

From: Andrey Fedorov <fedorov@bwh.harvard.edu>

git-svn-id: http://svn.slicer.org/Slicer4/trunk@22386 3bd1e089-480b-0410-8dfb-8563597acbee
COMP: Fix unused variable warning in qSlicerViewControllersModuleWidget

From: Jean-Christophe Fillion-Robin <jchris.fillionr@kitware.com>

git-svn-id: http://svn.slicer.org/Slicer4/trunk@22387 3bd1e089-480b-0410-8dfb-8563597acbee
BUG: Remove DTI tutorial until pipeline for glyphing is fixed.

See r22363 [1], issue #3323 [2] and issue #2808 [3]

[1] http://viewvc.slicer.org/viewvc.cgi/Slicer4?view=revision&revision=22363
[2] http://www.na-mic.org/Bug/view.php?id=3323
[2] http://www.na-mic.org/Bug/view.php?id=2808

Co-authored-by: Chrystel Juan <chrystel.juan@kitware.com>

git-svn-id: http://svn.slicer.org/Slicer4/trunk@22388 3bd1e089-480b-0410-8dfb-8563597acbee
BUG: With "--launch" arg - Add symlink support / Do not show splashscreen

Fixes #2356
Fixes #3075

git-svn-id: http://svn.slicer.org/Slicer4/trunk@22389 3bd1e089-480b-0410-8dfb-8563597acbee
BUG: fix the issue where warning field is editable

If non populated, warning is initialized to '', allowing to set item flags.
The solution was discussed with @pieper. Closes issue 3284.


git-svn-id: http://svn.slicer.org/Slicer4/trunk@22390 3bd1e089-480b-0410-8dfb-8563597acbee