Fixed menu item sorting. "Show roms 1st" overwrote any alpha sorting.
This change preserves alpha sorting (if on), and will cause any emulator without
roms to move to after the emulators with roms.
This drops sorting by the number of roms, which was not implied by the config option name.
If that is desired, suggest that it is an additional option that supercedes alpha sorting,
or is a "primary sort" option where you choose between alpha / # of roms.