Packager: Sort the list of packages initially in Open Installed Packages dialog.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@47050 4005530d-fff6-0310-9dd1-cebe43e6787f
LCL, QT: Set header's sort indicator in ListView even if data is not set yet.

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@47051 4005530d-fff6-0310-9dd1-cebe43e6787f