[TIMOB-15039] iOS7: Map View - layout UI and flickering issue when loading map

When loading the Map View, and pressing "OK" to allow access to your location, the map loads without problem. Regardless, it looks unattractive after navigating to the previous window and back again. The view is flickering before the map loads. I did not notice this issue with the previous iOS7 seed and 3.1.2.GA SDK. To reproduce: 1. Install and run KS > Base UI > Views > Map View 2. OK to access the location 3. Navigate back (< Views) 4. Navigate to the Map View Actual result after step 4 - half the screen is flickering, although it is obviously try to load map *not happening on iOS6*