Cleaning up a few things
Adding XLSXGenerator links
Adding header links
Adding header links
Update README.md
Merge pull request #1 from nathanathan/master

Working raising on batch upload limits
Error messages + seeing if I can embed some templates
Seeing if UI widget can handle more files at once.
documentation and cleanup
Merge branch 'master' of github.com:nathanathan/ODKScan_webapp
Merge branch 'master' of github.com:UW-ICTD/ODKScan_webapp
updating core
Fixing uploader stuff