Uploader - file types to exclude

[Cindy Qi Li]

Aaron, Colin and Justin, thanks a lot for your help. Fluid file uploader in 
ATutor has been successfully upgraded to 1.1.

Another thought: one feature that Fluid may consider to add in is the file 
types to be excluded from the uploader. File uploader already supports the 
file types that can be uploaded by setting the uploadManager option 
"fileTypes". When this option is set, only the given file types are listed 
in the popup OS file dialog.

In ATutor, administrators can define a list of file types that are NOT 
allowed to be uploaded into ATutor. For example, the files with extension 
"exe" or "php" or "bat" are forbidden as they have potential to ruin the 
system. It would be nice that Fluid can support something like 
"fileTypesToExclude", which could either stop the file types being listed in 
file dialog, or, when they are selected in dialog and go into queue, show an 
error like "illegal file type" besides those files.

Cindy