fix bug with favorites
fix bug with favorites

Favoriting thread No. 1 caused all threads with number starting with
1 (No. 10, 11, 12, etc.) appear favorited.

Y0ba/Dollchan-Extension-Tools,SthephanShinkufag/Dollchan-Extension-Tools,SthephanShinkufag/Dollchan-Extension-Tools,lisanyan/Dollchan-Extension-Tools,aslian/Dollchan-Extension-Tools,2Rainbow/Dollchan-Extension-Tools,miku-nyan/Dollchan-Extension-Tools,Y0ba/Dollchan-Extension-Tools,wakaber/Dollchan-Extension-Tools