Ensure SI prefix compliance with base2 prefixes

I'm not sure if we have any issue here, but we should do a quick audit of our use of kilobyte, megabyte and gigabyte prefixes, especially if we are anywhere using them in the binary sense of kilobyte=1024 or megabyte = 1024*1024, as is commonly done with file sizes. Since we're required to adhere to SI, ISO and IEC conventions, any cases where we need the binary sense, we'll need to change to kibibyte (Ki), mebibyte (Mi) and gibibyte (Gi).