Simply's Gamego metadata edito 2.0!!

This new update includes:

• Automatic Retroarch Import support
• Groups work now (sorry about that)
• Group Manager (Create new, rename, etc.)
• Multi-Select Support (Mass change Group, Mass delete)
• Deleted unnecessary files and clutter
• Better mass Import assistant

Anyways, Gamego kinda sucks in general (It's very hard to get some parameters working for some reason, etc.), so I've been working on my own launcher with a very similar style to fix these issues (Kenney doesn't seem to respond to messages), so I'll keep you updated on that.