Small fixes

- Remove a useless space in OneDayZoomItem
- Update separator in LongTermDayItem

Change-Id: I12f6b80706d64ed2ba5985c5b996aaa6367c7130
Reviewed-by: Jens Bache-Wiig <jens.bache-wiig@digia.com>
Don't close the app when pressing the back button while searching

Instead go back to the main cities view.

Change-Id: I1541085e1f9d9546d46451f0680c05213d22f414
Reviewed-by: Jens Bache-Wiig <jens.bache-wiig@digia.com>
Update translation flags (qsTr)

Use same temperature formating everywhere.

Change-Id: I80b7004a5011634bee4d11a47116f24ccb317723
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>