Unified Game Directory & Fast Server Switching

What's New
Live and Test now share one game folder, so switching servers is faster and uses far less disk space.
One install: the default folder is 
SWGNge_Public in your user profile. No second 10 GB copy is needed.
Fast switching: choosing Live or Test in the launcher only updates the files that differ.
Settings kept: keymaps, chat colors, macros, UI positions and graphics settings survive a switch.
Login settings kept: auto-login username, avatar name and 4K UI mode carry over.
FAQ and Known Details
[NOTE] You can change the install folder in the launcher; an invalid path falls back to the default.