Improved handling of FractionUploads.  Added ability to have multiple
separations in a single spreadsheet.
Improved parsing of MultiPartRequest.  If object is already
MultiPartRequest, just return.
Fixed isAllowed() method to utilize new User "storage"
Added static method to obtain working spreadsheet.
Removed old code.
Fixes and updates to menu style.
Improved layout of menu.
Fixed form to parse multiple rows.
Switched position of "View Collection" and "View Source Isolation"
removed.