[Yanel-usage] Some minor improvement re "My Profile"

[Michael Wechner]

Hi

I have added a link to the toolbar where one can see as which user one 
is signed in (the same link as under the Yanel menu "My Profile), e.g.

http://127.0.0.1:8080/yanel/from-scratch-realm/yanel/users/lenya.html

Additionally one can now edit the user language within the profile.

Enjoy

Michi