Update App Update screen to be more iOS 6 like

Also do some small refactoring and rename the PS classes to BIT to avoid any possible namespacing problems

Classes/BITAppStoreHeader.h

@@ -0,0 +1,41 @@
+/*
+ * Author: Andreas Linde <mail@andreaslinde.de>
+ *         Peter Steinberger
+ *
+ * Copyright (c) 2012 HockeyApp, Bit Stadium GmbH.
+ * Copyright (c) 2011-2012 Peter Steinberger.
+ * All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#import <UIKit/UIKit.h>
+
+@interface BITAppStoreHeader : UIView
+
+@property (nonatomic, copy) NSString *headerLabel;
+@property (nonatomic, copy) NSString *middleHeaderLabel;
+@property (nonatomic, copy) NSString *subHeaderLabel;
+@property (nonatomic, retain) UIImage *iconImage;
+
+@end