Wrapped the "(unsubscribe)"-text with the function t() around line 349, for easy localization of the string
Added functionality to hook_user and hook_og to remove the user role info from og_users_roles table if the user is either unsubscribed from group or deleted from site.
5.x-1.3 unfortunately wasn't properly tagged so it didn't contain all the necessary files. This release replaces that one, and it adds a small UI improvement as a bonus:
#152556 Added alt attribute to "Add..." image. Patch by MarcoZ.