Function to untrash a given thread by id. This can reverse the results of a previous gm_trash_thread().
Arguments
- id
thread id to access
- user_id
gmail user_id to access, special value of 'me' indicates the authenticated user.
See also
Other thread:
gm_delete_thread(),
gm_modify_thread(),
gm_threads(),
gm_thread(),
gm_trash_thread()