Some fixes to autofill with Unicode usernames; fixed a few end user experience pieces of the group CP. Users are now allowed to freely leave GROUP_OPEN and GROUP_REQUEST groups, and must be removed by a group mod for GROUP_CLOSED and GROUP_HIDDEN.

{
	// Language metadata
	lang_name_english: 'English',
	lang_name_native: 'English',
	lang_code: 'eng'
}