Make each row in the list accessible as one item.

This also gets rid of the usage of the Repeater in order to
render the background Rectangle and MouseArea, which is nicer.

Change-Id: I0382878225f197ceaed648be45dde421610f7731
Reviewed-by: Caroline Chao <caroline.chao@digia.com>
Make city search results and list of cities accessible

Change-Id: Ibc9fa8d4bb15019b2a4d5bc9a818b948c412a255
Reviewed-by: Caroline Chao <caroline.chao@digia.com>
Represent title bar in a more structured way for a11y purposes.

The title bar will now have up to two accessibility children:
1. Back button (optional)
2. Title bar text (City + Country + "10 day forecast" combined)

Change-Id: I9ad75461befbb23e0a66780b445a16cb474a7a96
Reviewed-by: Caroline Chao <caroline.chao@digia.com>