add create and delete a docType
add docType controller
add test docType
name of docTyp should be unique
ignores lowercase and uppercase for doctype and name
add mails controller
add permissions for send mail
Merge pull request #14 from poupotte/feature/docType

docType API
Merge branch 'feature/sendMail' of github.com:poupotte/cozy-data-system

Conflicts:
	config/routes.coffee
comment mail tests