Converted tabs to spaces in CASAuthentication to follow the style other library files.
Converted tabs to spaces in CASAuthentication to follow the style other library files.

modolabs/Kurogo-Mobile-Web,wesley1001/Kurogo-Mobile-Web,wesley1001/Kurogo-Mobile-Web,modolabs/Kurogo-Mobile-Web,wesley1001/Kurogo-Mobile-Web,modolabs/Kurogo-Mobile-Web