Adding a community-requested list of Gecko and Action Replay codes to the allowlist. Many of these codes were from the wiki and are being added to Dolphin's repo for the first time.
Main Stick is changed to Control Stick and C-Stick is changed to C Stick.
A new ui_name variable is added to ControlGroup so that the UI strings
in DolphinWX can be updated without breaking backwards compatibility
with config INIs and other things that use names as IDs.
