OO-4028: Format the certification e-mail to make it look nice

src/main/java/org/olat/course/certificate/ui/_i18n/LocalStrings_de.properties

@@ -61,7 +61,7 @@ notifications.title=Neue Zertifikate in Kurs "{0}"
 notifications.desc={0} hat ein neues Zertifikat erhalten.
 notifications.header=Neue Zertifikate in Kurs "{0}"
 certification.email.subject=Sie haben ein OpenOLAT-Zertifikat erhalten
-certification.email.body=Gratuliere!\n\nSie haben ein Zertifikat erhalten.\nAls Anhang finden Sie das Zertifikat des Kurses: "{0}".
+certification.email.body=<h1>Herzliche Gratulation\!</h1>Sie haben ein Zertifikat erhalten.<br/><br/>Als Anhang finden Sie das Zertifikat des Kurses "{0}".<br/><br/>
 confirm.certificate.title=Zertifikat erstellen
 confirm.certificate.text=Es wurde bereits ein Zertifikat ausgestellt und die Wartezeit f\u00FCr die Rezertifizierung ist noch nicht abgelaufen. M\u00F6chten Sie dennoch ein neues Zertifikat erstellen?
 confirm.certificate.template.deleted=Die Vorlage "{0}" wurde gel\u00F6scht.

src/main/java/org/olat/course/certificate/ui/_i18n/LocalStrings_en.properties

@@ -18,7 +18,7 @@ certificate.custom3=Custom variable 3
 certificates.wizard.overview=Overview
 certificates.wizard.select=Select user
 certificates.wizard.title=Create certificates
-certification.email.body=Congratulations\!\r\n\r\nYou have received a certification.\r\nPlease find attached the certificate to the course "{0}".
+certification.email.body=<h1>Congratulations\!</h1>You have received a certification.<br/><br/>As an attachment you will find the certificate of the course "{0}".<br/><br/>
 certification.email.subject=You have received an OpenOLAT certification
 error.mail.invalid=Please provide a valid e-mail address.
 choose.title=Select template

src/main/java/org/olat/course/certificate/ui/_i18n/LocalStrings_fr.properties

@@ -17,7 +17,7 @@ certificate.custom3=Variable personnalis\u00E9e 3
 certificates.wizard.overview=Aper\u00E7u
 certificates.wizard.select=Choisir l'utilisateur
 certificates.wizard.title=G\u00E9n\u00E9rer des certificats
-certification.email.body=F\u00E9licitations\r\n\r\nVous avez re\u00E7u un certificat.\r\nVous trouverez en annexe le certificat du cours\: "{0}"
+certification.email.body=<h1>F\u00E9licitations</h1>Vous avez re\u00E7u un certificat.<br/><br/>Vous trouverez en annexe le certificat du cours "{0}".<br/><br/>
 certification.email.subject=Vous avez re\u00E7u un certificat OpenOLAT
 choose.title=Choisir le mod\u00E8le
 coaching.tool=Coaching

src/main/java/org/olat/course/certificate/ui/_i18n/LocalStrings_it.properties

@@ -13,7 +13,7 @@ certificate.creationdate=Certificato emesso il {0}
 certificates.wizard.overview=Panoramica
 certificates.wizard.select=Selezionare l'utente
 certificates.wizard.title=Creare certificati
-certification.email.body=Congratulazioni\!\r\n\r\nHai ricevuto una certificazione.\r\nIn allegato il certificato per il corso\: "{0}".
+certification.email.body=<h1>Congratulazioni\!</h1>Hai ricevuto una certificazione.<br/><br/>In allegato il certificato per il corso "{0}".<br/><br/>
 certification.email.subject=Hai ricevuto una certificazione OpenOLAT
 choose.title=Scegliere il modello
 coaching.tool=Tutoraggio

src/main/java/org/olat/course/certificate/ui/_i18n/LocalStrings_pt_BR.properties

@@ -13,7 +13,7 @@ certificate.creationdate=Certificado emitido em {0}
 certificates.wizard.overview=Vis\u00E3o geral
 certificates.wizard.select=Selecionar usu\u00E1rio
 certificates.wizard.title=Criar certificados
-certification.email.body=Parab\u00E9ns\!\r\n\r\nVoc\u00EA recebeu uma certifica\u00E7\u00E3o.\r\nSegue em anexo o certificado para o curso "{0}".
+certification.email.body=<h1>Parab\u00E9ns\!</h1>Voc\u00EA recebeu uma certifica\u00E7\u00E3o.<br/><br/>Segue em anexo o certificado para o curso "{0}".<br/><br/>
 certification.email.subject=Voc\u00EA recebeu uma certifica\u00E7\u00E3o OpenOLAT
 choose.title=Selecionar modelo
 coaching.tool=Coaching