Reskin: Use the new [RiotDesignValues applyStyleOnNavigationBar:] method everywhere

Note that we do not change anymore the bar tint color when changing tabs. This is alwasy the same.

Riot/Modules/Common/WebViewController/WebViewViewController.m

@@ -51,9 +51,8 @@
 
 - (void)userInterfaceThemeDidChange
 {
-    self.view.backgroundColor = kRiotPrimaryBgColor;
-    self.defaultBarTintColor = kRiotSecondaryBgColor;
-    self.barTitleColor = kRiotPrimaryTextColor;
+    [RiotDesignValues applyStyleOnNavigationBar:self.navigationController.navigationBar];
+
     self.activityIndicator.backgroundColor = kRiotOverlayColor;
     
     webView.backgroundColor = kRiotPrimaryBgColor;