The calendar selection dialog for accepting an invite should appear on the same screen

[AndreSomers]

When you accept an email invitation for an event while you have multiple calendars setup, you get a dialog which calendar to use for this event. But, this dialog may appear anywhere. In my case, it tends to appear on another screen than the one I was working on, in a corner. Not very visible. As the dialog is modal, the rest of the application becomes unresponsive to input. 

The dialog should appear on the same screen and preferably overlaid on the window the action was triggered from, to improve the UI flow. 

[Jon]

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