[ticket/11103] Move all email templates to the email/ directory & prep short

Prepare short email templates (to be used in jabber)

PHPBB3-11103

phpBB/language/en/email/quote.txt

@@ -0,0 +1,20 @@
+Subject: Topic reply notification - "{TOPIC_TITLE}"
+
+Hello {USERNAME},
+
+You are receiving this notification because "{AUTHOR_NAME}" quoted you in the topic "{TOPIC_TITLE}" at "{SITENAME}". You can use the following link to view the reply made.
+
+If you want to view the quoted post, click the following link:
+{U_VIEW_POST}
+
+If you want to view the topic, click the following link:
+{U_TOPIC}
+
+If you want to view the forum, click the following link:
+{U_FORUM}
+
+If you no longer wish to receive updates about replies quoting you, please update your notification settings here:
+
+{U_NOTIFICATION_SETTINGS}
+
+{EMAIL_SIG}