Sending Progress

- improved progress bar styles (with completed status)
- add pause/resume buttons
- fixed method case in settings.mta for MailPoet & SMTP Providers
- fixed parsley dependency
- added validation on from name & address on step 3

assets/js/src/settings/tabs.js

@@ -36,7 +36,7 @@ define(
         } else {
           // hide DKIM option when using MailPoet's API
           jQuery('#mailpoet_mta_dkim')[
-            (method === 'mailpoet')
+            (method === 'MailPoet')
             ? 'hide'
             : 'show'
           ]();