#36 [patch] Language configurable units for byte sizes

Hello

Attached you will find a patch that makes byte size
units like "kB" vs. "Ko" configurable in the language file.
The english units are according to the international SI
system (http://en.wikipedia.org/wiki/Byte) as rarely
anybody outside France has ever seen "Ko" as a unit :-)

Also, the two functions DownloadSize() and
returnFileSize() shared a lot of redundant code, now
the former just calls the latter (in fact one of them
uses french and the other SI units :))

Apart from that, many thanks for your work, I like this
Wiki very much!

bye,

-christian-
<ch@lathspell.de>