return original filename to fileupload
refactor files.js, make proper use of fileupload events
return created table row, use as context in fileupload events
don't update progress bar in ie < 10
use === to compare empty string ''
use local variable to walk DOM only once
'#upload' is actually '#uploadprogresswrapper', fix css and js to show cancel button correctly
use css browser switch instead of deprecated jquery browser detection