Fixed sorting of Backlog issues.
Fixed sorting of Backlog issues.

Same as commit 9eee9d0f9d8b1fd96b69d2ff395438f9f9a20cdd but applied to Backlog on Planning page.

SysBind/thebuggenie,nrensen/thebuggenie,thebuggenie/thebuggenie,deshion/thebuggenie,thebuggenie/thebuggenie,gabor-udvari/thebuggenie,SysBind/thebuggenie,milkyway-git/thebuggenie,gabor-udvari/thebuggenie,thebuggenie/thebuggenie,azaghal/thebuggenie,milkyway-git/thebuggenie,deshion/thebuggenie,milkyway-git/thebuggenie,LogosLabs/thebuggenie,nrensen/thebuggenie,praveenscience/thebuggenie,thebuggenie/thebuggenie,thebuggenie/thebuggenie,Rvanlaak/thebuggenie,gabor-udvari/thebuggenie,azaghal/thebuggenie,hurie/thebuggenie,SysBind/thebuggenie,SysBind/thebuggenie,SamMousa/thebuggenie,praveenscience/thebuggenie,SamMousa/thebuggenie,azaghal/thebuggenie,Rvanlaak/thebuggenie,LogosLabs/thebuggenie,SamMousa/thebuggenie,LogosLabs/thebuggenie,deshion/thebuggenie,hurie/thebuggenie,milkyway-git/thebuggenie,hurie/thebuggenie,deshion/thebuggenie,azaghal/thebuggenie,nrensen/thebuggenie,gabor-udvari/thebuggenie,JonathanRH/thebuggenie,LogosLabs/thebuggenie,nrensen/thebuggenie,praveenscience/thebuggenie,hurie/thebuggenie,Rvanlaak/thebuggenie,JonathanRH/thebuggenie,JonathanRH/thebuggenie,JonathanRH/thebuggenie,SamMousa/thebuggenie,Rvanlaak/thebuggenie,praveenscience/thebuggenie