Finished off dashboard template. Also updated code that schedules
Computations to pass on to Zoo the cached file's name instead of
the file url.
Fixed validation for datafiles.
DataFiles now separated by | instead of , in request URL.
Added timestamp to cache file name.
Added try/catch when saving datafile to handle IOErrors.
Added 'Update Datafile Cache' button in admin backend. It will reload
the cache for all datafiles via ajax.