How do I show plots when using Graphlab?
I have found some solution and will post it here, because somebody, who works with graphlab, can have the same question.

We can look at the example here: Six degrees of Kevin Bacon

At te beginning of the program execution you need to run next command:

graphlab.canvas.set_target('ipynb')


Exactly this is a key of the whole problem (at least by me:-)

At the beginning it is important to know, which parameter of set_target() command you want to execute. You can use two options for argument of this command:  'ipynb' (which is executed direct in iPython Notebook, like in example) or 'browser' (which open the new window with the plots)
On my machine 64-bit, Ubuntu, I can not use the command 'ipynb'. Only the 'browser'-command get me the plot back. I don't think, it is necessary to change https to http, but you can do it anyway. We have also the other machine by us (32-bit, Ubuntu) and it executes the other command 'ipynb', but not 'browser' (without to change https to http)