Actually remove the datetime field from field properties when it is null, instead of leaving it and setting it to null.
Because the jquery datepicker's default localization is English, it could conflict with the UserInterfaceCulture that is used in the StringToDateTimeConverter, when for example the abbreviated name of the month is used as a value.
In the method DoAfterUpdate in Listeners the given Node did not contain the modified properties.
Add new bootstrap style to number field.
Merge pull request #184 from Erikvl87/fix-datetimefield-initialize

Fix DateTimeField bugs
Merge pull request #185 from Erikvl87/listener-on-after-update

Given Node in DoAfterUpdate should contain modified properties
Merge pull request #186 from Erikvl87/input-number-field-style

Add new bootstrap style to number field.