editortoolbar: Positioning of the toolbar, Option Show/Hide, Jump Back/Jump Forward added as initial defaults, Main Menu entry under View, to access configuration, patch 26495 from G. Colla

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@45925 4005530d-fff6-0310-9dd1-cebe43e6787f