Update rails_admin to version 0.6.1
Update rails_admin to version 0.6.1

jamiekelly/adopt-a-hydrant,friendlycode/adopt-a-hydrant,jasnow/adopt-a-hydrant,codeforamerica/adopt-a-hydrant,jamiekelly/adopt-a-hydrant,codefornigeria/adopt-a-hydrant,voyera/adopt-a-hydrant,eebbesen/adopt-a-tree,CostantinB/adopt-a-hydrant,friendlycode/adopt-a-hydrant,akintoey/adopt-a-hydrant,t-pfaff/adopt-a-hydrant,jamiekelly/adopt-a-hydrant,billyfung/van-racks,CostantinB/adopt-a-hydrant,OpenTwinCities/adopt-a-tree,OpenTwinCities/adopt-a-tree,jasnow/adopt-a-hydrant,voyera/adopt-a-hydrant,voyera/adopt-a-hydrant,billyfung/van-racks,OpenTwinCities/adopt-a-tree,t-pfaff/adopt-a-hydrant,t-pfaff/adopt-a-hydrant,Bryanprz/adopt-a-street,baraka101/dar-adopt-a-mtaro,codefornigeria/adopt-a-hydrant,Stackato-Apps/adopt-a-hydrant,jasnow/adopt-a-hydrant,eebbesen/adopt-a-tree,Stackato-Apps/adopt-a-hydrant,friendlycode/adopt-a-hydrant,codefornigeria/adopt-a-hydrant,CostantinB/adopt-a-hydrant,codeforamerica/adopt-a-hydrant,akintoey/adopt-a-hydrant,codeforamerica/adopt-a-hydrant,OpenTwinCities/adopt-a-tree,baraka101/dar-adopt-a-mtaro,billyfung/van-racks,Bryanprz/adopt-a-street,akintoey/adopt-a-hydrant,baraka101/dar-adopt-a-mtaro,Bryanprz/adopt-a-street,eebbesen/adopt-a-tree,Stackato-Apps/adopt-a-hydrant