CORE-5301 Moved OpenFolderEvent into de-common-module.
CORE-5301 Added "New Window" button to Data window.

Added requestNewView and newViewRequested methods to OpenFolderEvent.
Added a "New Window" button to DiskResourceViewToolbar and a DiskResourcePresenter#onNewWindow method that will fire the OpenFolderEvent.
Updated the ConfigFactory#diskResourceWindowConfig method to accept a newWindowRequested flag, which causes the config to be created with a unique tag, which causes a new window to be opened with that config.
Updated ShowWindowEventHandler#onRequestOpenFolder to pass the OpenFolderEvent#newViewRequested flag to the ConfigFactory#diskResourceWindowConfig method.
Updated ToolbarButtonVisibilityNavigationHandler to allow the "New Window" button to be clicked when any folder (or no folder) is selected.
CORE-5301 Added folder name to Data window titles.

Added the DeDiskResourceWindow to the Presenter has a Folder SelectionHandler, so that it could update its title with the selected folder name.
Added a dataWindowTitle display string.
CORE-5301 Fix for drag-n-drop anywhere in Data grid.