global: removal of depreated WTForms extenstion
- Replaces Required validator with DataRequired. (addresses #2620)
- Fixes PEP8/257.
Signed-off-by: Leonardo Rossi <leonardo.r@cern.ch>
Reviewed-by: Jiri Kuncar <jiri.kuncar@cern.ch>
Leonardo Rossi <leonardo.r@cern.ch> | Feb 2 2015, 09:15 |