onikienko/TabHamster — pull request #14 by richarson (2014-08-18 00:26:23+00:00)
Title: Fix "Saved groups" and "Sessions" not expanding

Fix "Saved groups" and "Sessions" not expanding in Opera 25 Developer (on Linux at least)

According to http://javascript.about.com/library/bldom12.htm, insertBefore requires 2 parameters, seting the second parameter to null seems to fix TabHamster for me.

And an additional newline that github seems to have added for me :/