added documentation and did a bit of whitespace policing to make the next few commits more palatable.
added documentation and did a bit of whitespace policing to make the next few commits more palatable.

Note that the remarks and a few other bits in the top comment block are of thing to be; the current state of affairs is not there yet. A few more commits to go...

cpojer/mootools-filemanager,cpojer/mootools-filemanager