Fix search spinner popup background on pre-L.
Fix search spinner popup background on pre-L.

Closes #248.

Bloody-Badboy/gh4a,shineM/gh4a,edyesed/gh4a,shekibobo/gh4a,shineM/gh4a,slapperwan/gh4a,AKiniyalocts/gh4a,AKiniyalocts/gh4a,shekibobo/gh4a,sauloaguiar/gh4a,Bloody-Badboy/gh4a,sauloaguiar/gh4a,edyesed/gh4a,slapperwan/gh4a,DeLaSalleUniversity-Manila/octodroid-ToastyKrabstix,DeLaSalleUniversity-Manila/octodroid-ToastyKrabstix