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
The 8 spaces is my failure. I'll fix it. About qulice, the build throws a lot of `java.lang.NoClassDefFoundError: Could not initialize class com.jcabi.xml.XMLDocument`...