Follow user when starts a talk 

I'm not sure how to tests this, since `StartsTalksTest#startsTalks()` is ignored right now. I tried to remove the `@Ignore` annotation, but, obviously enough, the test breaks.

Maybe I should put a TODO for that and wait the test is fixed. Right now I'm not sure how to proceed.


Refs #652
why eight spaces?? should always be 4. qulice didn't complain here?