IDE: added menu item Windows / Center a lost window

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41974 4005530d-fff6-0310-9dd1-cebe43e6787f
Converter: improve WideString conversion. Not all nums are 3 characters long. Issue #23116

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41975 4005530d-fff6-0310-9dd1-cebe43e6787f