Use dynamic menu items

[xoascf]

Some XAML refactoring and updating of method names to "fix naming rule", updating of control names and event handler methods. This is a working, merge-ready part of #461, otherwise it will never get merged!

• Updated control names in RetroBar/PropertiesWindow.xaml to use x:Name instead of Name for consistency. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12]
• Renamed AutoStartCheckBox control to cbAutoStart for consistency.
• Renamed event handler methods in RetroBar/PropertiesWindow.xaml.cs to follow a consistent naming convention. [1] [2] [3]
• Added new MenuItem resources and updated the context menu in RetroBar/Taskbar.xaml to use them as needed. [1] [2] [3]

This seems even closer to the XP behavior. Once the template is abstracted/detached/unhardcoded from the taskbar, it should also allow the use of custom menu items for the theme (so the user can customize items to hide or show them, apart from the Exit option in Properties).

[dremin]

Nice! One thing I noticed is the option to set time is no longer bold. However, XP and Vista don't have this bold, while earlier versions do. Maybe it should be theme-controllable.