Shift some WML menu item management from action_wml to wmi_container.

I think it will be easier to maintain this management if it is all
done in one file.
Shift some WML menu item management from action_wml to wmi_container.

I think it will be easier to maintain this management if it is all
done in one file.
Shift some WML menu item management from play_controller to wmi_container.

I think it will be easier to maintain this management if it is all
done in one file.
Add a const qualifier.
Shift some WML menu item management from handlers to wmi_container.

I think it will be easier to maintain this management if it is all
done in one file.
Expand changelog entry for 3a78062d3e0cc8b48d4e5e5bc226fc3aac0a37d9.
Properly cast an initialization to unsigned.

I suppose SIZE_MAX would also work, but that looks like C++11.
Alphabetizing sections.