notepad: Restructure menus and make hot-keys unique.
Some of the hot-keys, such as “Edit→Cut” and “Edit→Time/Date” had identical “T” hot-keys, as well as “Search→Search” and “Search→Search Next” both being on “S”.
With this change, the menus are restructured to match the Windows XP Notepad menus, in item names, capitalization, and hot-keys. Notably the usability issue with conflicting hot-keys is eliminated. Users familiar with the Microsoft Windows Notepad menus and their hot-keys should be able to use Wine Notepad without changing any workflow.