Log Message:
Update py-wtforms to 1.0.5.

Version 1.0.5
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Released September 10, 2013

- Fix a bug in validators which causes translations to happen once then
  clobber any future translations.
- ext.sqlalchemy / ext.appengine: minor cleanups / deprecation.
- Allow blank string and the string 'false' to be considered false values
  for BooleanField (configurable). This is technically a breaking change,
  but it is not likey to affect the majority of users adversely.
- ext.i18n form allows passing LANGUAGES to the constructor.