Implemented Group wall update on member join

[mauzao9]

Hello there.

I it would be nice that when a new member joins / is accepted, wall to be updated with one activity message about it. ^-^

 

[SoeHoe]

vote+1

 

[Dadparvar]

This is implemented: http://nobita.me/threads/newsfeed-when-a-user-joins-group.817/#post-6572