GUI Edit command

You can now edit every GUI with commands, so you don't need to struggle with the configs anymore

Here are the new commands:

/editgui setTitle <gui> <newTitle> - Set a new GUI Title
/editgui setRows <gui> <newRows> - Set new amount of rows
/editgui setItem <gui> <item> - Set new Item (The item in your hand will be used as new item!)
/editgui setItemSlot <gui> <item> <newSlot> -set new slot for item

Each command has tab completition, so the usage is very simple.