Update to binary prefix file size, Add directory children count

[RRosio]

• Update file size with binary prefixes
• Add directory children count

Addresses #151

[RRosio]

Something that came up when attempting to add the directory children count, is that we are lazy loading directory items, as such we do not currently have a count of the number of children in a directory.

One possibility is to only include that count once the directory has been loaded? However, I am not sure that provides the value that is intended for the user....

[martindurant]

One possibility is to only include that count once the directory has been loaded?

That's what I was thinking, but agree that it might look weird and not be all that useful.

[RRosio]

That's what I was thinking, but agree that it might look weird and not be all that useful.

For now, I've updated to only display the item count once the items have been loaded. If that seems unnecessary we can always remove it later on.... For reference it currently looks like: