Desktop: associate tree items with the corresponding view
Desktop: keep parted channels until closed
Desktop: revise tab & tree context menus
Desktop: fix SessionTreeWidget::moveToPrevItem()
Desktop: add MessageView::isActive()
Desktop: add MessageView::receiverChanged() [signal]
Desktop: SessionTreeItem <-> MessageView::isActive()
Desktop: redirect *-targeted notices to the server tab
Desktop: fix SessionTabWidget::closeView()

Don't send quit/part commands for 'inactive' views
Desktop: fix MainWindow::sessionRemoved()
Desktop: limit the background style sheets for item views
Desktop: new ajax loader
Fix MessageHandler::handlePartMessage()

Deliver the part-message only if the receiver exists. Do not trigger
re-creation in case the receiver view has already been closed...
Removed the unmaintained MeeGo example
QtQuick2: QT_INSTALL_QML
Desktop: added close icons to the view tree
Desktop: fix MainWindow::closeTreeItem()
Desktop: revise view tree close icons
Desktop: allow view tree DND only within the same session
Desktop: subtle close icon