Opening menu during data refresh sometime leads to incorrect display

[orontee]

Step to reproduce

1. Open menu and select a location in history different from current location
2. Observe that a data refresh is triggered and the location is updated
3. While the data refresh is ongoing, open menu
4. Observe that the menu button doesn't work anymore and pressing the menu key first update the location, restoring original location...

Analysis

Looks like events aren't distributed to app event handler while menu is open

Quick win: Disable menu when there's an ongoing refresh (implies adding a state to model).

Alternative: Make sure events are distributed to the right event handler...

[orontee]

All events are distributed to the app event handler. Must come from a bug in refresh display after menu dialog is hidden.

Let's go for the quick win.