as requested, implement 'easy' menu mode for novice users;

default behavior should not be changed, easy mode forced by /var/etc/.easymenu file inside image;
at the moment switch between modes is done by main menu -> 'stop' button -> enter pin code,
restart needed after mode switch


Origin commit data
------------------
Commit: 606bd01878
Author: [CST] Focus <focus.cst@gmail.com>
Date: 2013-10-25 (Fri, 25 Oct 2013)

src/gui/parentallock_setup.h

@@ -44,7 +44,7 @@ class CParentalSetup : public CMenuTarget, public CPINProtection
 {
 	private:
 		int width;
-		void showParentalSetup();
+		int showParentalSetup();
 		
 	protected:
 		virtual CMenuTarget* getParent() { return( NULL);};
@@ -58,6 +58,7 @@ class CParentalSetup : public CMenuTarget, public CPINProtection
 		};
 		~CParentalSetup();
 		int exec(CMenuTarget* parent, const std::string & actionKey);
+		bool checkPin() { return check(); }
 };