Template syntax validation for EmailTemplate fields
Adds test for template syntax validation
Template syntax validation for EmailTemplate fields
Adds test for template syntax validation
Merge branch 'templatesyntax' of github.com:wadevries/django-post_office into templatesyntax

Conflicts:
	post_office/tests/models.py
Merge pull request #17 from wadevries/templatesyntax

Template syntax validation for EmailTemplate fields