Real world example is stuck loading due to upper cases

[zhouzi]

Hey there!

GitHub's api is case insensitive, which means that searching for the user "zhouzi" will result in "Zhouzi" and "zhouzi/theaterjs" in "Zhouzi/TheaterJS". Right now, it's causing the UI to be stuck loading because there's no "zhouzi" user in the entities (but there's "Zhouzi").

[gaearon]

Thanks for the fix!