Make sure we don't add the inheritence filter twice
Make sure we don't add the inheritence filter twice

kirberich/djangae,trik/djangae,jscissr/djangae,martinogden/djangae,SiPiggles/djangae,kirberich/djangae,trik/djangae,armirusco/djangae,potatolondon/djangae,jscissr/djangae,wangjun/djangae,leekchan/djangae,asendecka/djangae,grzes/djangae,chargrizzle/djangae,grzes/djangae,asendecka/djangae,kirberich/djangae,potatolondon/djangae,chargrizzle/djangae,asendecka/djangae,leekchan/djangae,martinogden/djangae,chargrizzle/djangae,SiPiggles/djangae,armirusco/djangae,armirusco/djangae,wangjun/djangae,martinogden/djangae,grzes/djangae,trik/djangae,SiPiggles/djangae,jscissr/djangae,leekchan/djangae,wangjun/djangae