Cocoa:Fixed crash when sharing QMenu between two QMenuBar instances

Don't insert a NSMenuItem into a NSMenu if this one already belongs to another NSMenu, this is forbidden
in the Cocoa framework and raises an Exception. The solution consists in tagging the menu as sharable
and moving it from one menubar to another when the window gets focus.

Task-number: QTBUG-31342

Change-Id: Ic3bfadd4704f363ac26122ae15547543a0f6d44d
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@digia.com>
Doc: Rearranged page titles in the <head> of HTML pages.

Before: <title>QtMultimedia 5.1: Camera</title>
After: <title>Camera | QtMultimedia 5.1</title>

"Camera" is page name and "QtMultimedia 5.1" is the assembled project
name.

-Regular page title is the same.
-It's a readability issue to not see the page title right away
-New arrangement conforms to Qt Project and blog name format:
 "<Title> | <Domain>"
-Tested with the tw-parser and it looks compatible with the
 qt-project.org site

Change-Id: Iae0eec9e66b5e21285bdad1e525923f60c72e56b
Reviewed-by: Sami Makkonen <sami.makkonen@digia.com>
Reviewed-by: Nico Vertriest <nico.vertriest@digia.com>
Reviewed-by: Venugopal Shivashankar <venugopal.shivashankar@digia.com>
Reviewed-by: Martin Smith <martin.smith@digia.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Doc: Fixed typo in QDialog.

Task-number: QTBUG-31493
Change-Id: I7bb7b249a0336dd949f8c74bcc22c0b7c39d0885
Reviewed-by: Geir Vattekar <geir.vattekar@digia.com>