Django-bootstrap3-validator

* update bootstrapValidator to 0.5.3
* add language options
* add validator_fields
* add message to validators
* add validator_requirejs_config tag

* adjust some validator's implements
* fix stringLength error
* validator tag add requirejs argument, default is False.

supported validators:

* between
* callback
* choices
* date
* different
* emailAddress
* greaterThan
* id
* integer
* lessThan
* notEmpty
* numeric
* phone
* remote
* stringLength
* uri
* zipCode