Minor fixes for the admin class.
Minor fixes for the admin class.

ad-m/django-avatar,aptwebapps/django-avatar,MachineandMagic/django-avatar,allenling/bugfixavatar,therocode/django-avatar,z4r/django-avatar,rizumu/django-avatar,e4c5/django-avatar,aptwebapps/django-avatar,Gidsy/django-avatar,holzenburg/django-avatar,allenling/bugfixavatar,therocode/django-avatar,allenling/django-avatar,e4c5/django-avatar,barbuza/django-avatar,fedetorre/django-avatar,DrMeers/django-avatar,robertour/django-avatar,allenling/django-avatar,TomLottermann/django-avatar,ayang/django-avatar,bazerk/django-avatar,integricho/django-avatar,ayang/django-avatar,heliodor/django-avatar,ofri/django-avatar,arctelix/django-avatar,bazerk/django-avatar,grantmcconnaughey/django-avatar,Mapiarz/django-avatar,Brendtron5000/django-avatar,lizrice/django-avatar,imgmix/django-avatar,Brendtron5000/django-avatar,Kami/django-avatar,robertour/django-avatar,Mapiarz/django-avatar,stellalie/django-avatar,tbabej/django-avatar,integricho/django-avatar,tbabej/django-avatar,holzenburg/django-avatar,nai-central/django-avatar,miohtama/django-avatar,ericroberts/django-avatar,barbuza/django-avatar,nai-central/django-avatar,Nuevosmedios/django-avatar,rizumu/django-avatar,z4r/django-avatar,dannybrowne86/django-avatar,brajeshvit/avatarmodule,Nuevosmedios/django-avatar,Temesis/django-avatar,stellalie/django-avatar,brajeshvit/avatarmodule,grantmcconnaughey/django-avatar,hexenxp14/django-avatar,jessehon/django-avatar,jessehon/django-avatar,hexenxp14/django-avatar,ericroberts/django-avatar,caumons/django-avatar,jezdez/django-avatar,ad-m/django-avatar,dannybrowne86/django-avatar,MachineandMagic/django-avatar,imgmix/django-avatar,jezdez/django-avatar