[Bug 1021565]: The 'Settings' link is now only visible to non-Mozillians in Mobile view.

This commit aims to fix Bug 1021565. The 'Settings' link is now only visible to non-Mozillians in the Mobile view (earlier it was visible to all groups). 
Here you need to do something similar with the above ``if/else`` case. If ``user_is_rep(user)`` show the settings link.