Added copy to duplicated collections
Copy is a localized term
GBA controller cleanup
GameGear controller prefs cleanup
NES controller prefs cleanup
SMS controller prefs cleanup
SNES controller prefs cleanup
Remove CrabEmu subdirectory and add CrabEmu-Core as a submodule of the project.
Revert "Remove CrabEmu subdirectory and add CrabEmu-Core as a submodule of the project."

This reverts commit 65a166bbf3fd5c224ae2d00c347a98960b8eaf63.
Rebuild the CrabEmu-Core submodule to be named CrabEmu instead.
Moving BSNES in its own repository and add the submodule in the main project.
Move FCEU into its own repository and add it as a submodule.
Move Gambatte core into its own repository and add it as a submodule.
Move GenesisPlus into its own repository and add it as a submodule.
Corrected commits.
Move Mednafen into its own repository and add it as a submodule.
Move Mupen64Plus into its own repository and add it as submodule.
Move NeoPop core into its own repository and add it as a submodule.
Move Nestopia core into its own repository and add it as a submodule.
Move SNES9x core into its own repository and add it as a submodule.