Replace GB/MB with GiB/MiB since binary units are actually being used

[logkos]

This shouldn't normally bother anyone but I've ran to a kernel panic on a niche OS and found out binary units are being used instead of decimal units displayed in disk settings. This PR also fixes this misuse in other areas where binary units are used (JIT Cache and Memory). I also replaced Finnish abbreviation with global one since nobody uses that way.