[OzzModz] User Group Join 2.0.1

Requirements:
XF 2.2+

Description:

Allow users to join groups when they meet specified criteria

Commissioned by @Forsaken

Features:

• Ability to join allowed groups if optional criteria are met
• Option to restrict leaving the group (when you try to enter such a group, confirmation will be required)
• A short description for the group entry conditions
• Criteria check scheduler - users will be kicked out of joined groups not matching the join criteria
• New user criteria - the user is already joined in or was not a joined of the selected groups