#12784: Properly (??) enable/disable preview mode menus on doc close/switching

git-svn-id: file:///svn/Scribus/trunk/Scribus@19609 11d20701-8431-0410-a711-e3c959e3b870
#12732: add image location and name to tooltip, and a button to jump to the location in the location browser

git-svn-id: file:///svn/Scribus/trunk/Scribus@19610 11d20701-8431-0410-a711-e3c959e3b870