There is no notification type email (probably outdated)
Added functionality to trigger notification when a user registers

Based on https://github.com/qzminski/contao-registration_mailtemplates/tree/develop
Fixed email tokens in registration notification
Added frontend module to send lost password message using notification center

Based on https://github.com/qzminski/contao-registration_mailtemplates/tree/develop
Fixed limit of available notification types in tl_module
Added limit of notification choices by module type
Merge branch 'hotfix/1.0.2' into feature/registration
Merge branch 'hotfix/1.0.2' into feature/registration
Merge commit 'f7cbc48b223e187637b6ae4d57434b6aecf2c1c3' into feature/registration
Merge branch 'feature/registration' into develop