grunt: jquery.form from bower

Signed-off-by: Yoan Blanc <yoan.blanc@cern.ch>
BibDocFile: javascript fixes

* Preloads jquery.form via a dummy require.js script.  (addresses #1900)

Signed-off-by: Yoan Blanc <yoan.blanc@cern.ch>
Reported-by: Petr Broz <petr.broz@gmail.com>
Tested-by: Petr Broz <petr.broz@gmail.com>