replaced mailer library, added email templates (#1462)

config/packages/dev/mailer.yaml

@@ -0,0 +1,3 @@
+framework:
+    mailer:
+        dsn: 'null://null'

config/packages/dev/swiftmailer.yaml

@@ -1,4 +0,0 @@
-# See https://symfony.com/doc/current/email/dev_environment.html
-swiftmailer:
-    #  send all emails to a specific address
-    # delivery_addresses: ['me@example.com']

config/packages/fos_user.yaml

@@ -8,18 +8,8 @@ fos_user:
     registration:
         confirmation:
             enabled: false
-            template: '@FOSUser/Registration/email.txt.twig'
     resetting:
         retry_ttl: 7200
         token_ttl: 86400
-        email:
-            template: '@FOSUser/Resetting/email.txt.twig'
     service:
-        mailer: fos_user.mailer.twig_swift
-#    group:
-#        group_class:    ~ # Required when using groups
-#        group_manager:  fos_user.group_manager.default
-#        form:
-#            type:               FOS\UserBundle\Form\Type\GroupFormType # or 'fos_user_group' on Symfony < 2.8
-#            name:               fos_user_group_form
-#            validation_groups:  [Registration, Default]
+        mailer: App\Mail\UserMails

config/packages/mailer.yaml

@@ -0,0 +1,3 @@
+framework:
+    mailer:
+        dsn: '%env(MAILER_URL)%'

config/packages/swiftmailer.yaml

@@ -1,3 +0,0 @@
-swiftmailer:
-    url: '%env(MAILER_URL)%'
-    spool: { type: 'memory' }

config/packages/test/mailer.yaml

@@ -0,0 +1,3 @@
+framework:
+    mailer:
+        dsn: 'null://null'

config/packages/test/swiftmailer.yaml

@@ -1,2 +0,0 @@
-swiftmailer:
-    disable_delivery: true

config/packages/twig.yaml

@@ -4,4 +4,7 @@ twig:
     strict_variables: '%kernel.debug%'
     form_themes:
         - 'form/kimai-theme.html.twig'
-    exception_controller: null
+    exception_controller: null
+    paths:
+        # used in templates/emails/layout.html.twig
+        '%kernel.project_dir%/assets/css': css