Add navigation buttons

[kimicol]

Here is an example of an actual music piece menu to list each instrument score :

There is no button or option to go back to program menu, forcing user to use browser return option.

For people not used to computers, such a button could clarify and simply navigation. Also, it could improve navigation for smartphone and tablet users.

[ofaurax]

In fact, the back button is well understood by most people. On phones, it's one of the base buttons, with "back to home", and "list of last apps".