message: Defaulted presentation context to true
  What harm can it do. Will revisit if this turns out to be a bad default
diff: {
  [super viewDidLoad];
  NVSearchBarView *searchBar = (NVSearchBarView *) [self.view viewWithTag:SEARCH_BAR];
  + self.definesPresentationContext = true;
  if (!!searchBar)
  {
  [self.navigationItem setSearchController:searchBar.searchController];
  [self.navigationItem setHidesSearchBarWhenScrolling:searchBar.hideWhenScrolling];
  - self.definesPresentationContext = true;
  }
  }
  