diff --git a/UI/MailPartViewers/BrazilianPortuguese.lproj/Localizable.strings b/UI/MailPartViewers/BrazilianPortuguese.lproj/Localizable.strings
index 801f6b12d..a8f5627ff 100644
--- a/UI/MailPartViewers/BrazilianPortuguese.lproj/Localizable.strings
+++ b/UI/MailPartViewers/BrazilianPortuguese.lproj/Localizable.strings
@@ -32,3 +32,8 @@ reply_info = "Esta é uma resposta de um convite feito por você.";
 "Untitled" = "Sem título";
 
 "Size" = "Tamanho";
+
+"Digital signature is not valid" = "Digital signature is not valid";
+"Message is signed" = "Message is signed";
+"Subject" = "Subject";
+"Issuer" = "Issuer";
diff --git a/UI/MailPartViewers/Czech.lproj/Localizable.strings b/UI/MailPartViewers/Czech.lproj/Localizable.strings
index 88a12d0a8..a51d2fb94 100644
--- a/UI/MailPartViewers/Czech.lproj/Localizable.strings
+++ b/UI/MailPartViewers/Czech.lproj/Localizable.strings
@@ -32,3 +32,8 @@ reply_info = "Toto je odpověď na pozvánku k událost, kterou jste vytvořili
 "Untitled" = "Bez názvu";
 
 "Size" = "Velikost";
+
+"Digital signature is not valid" = "Digital signature is not valid";
+"Message is signed" = "Message is signed";
+"Subject" = "Subject";
+"Issuer" = "Issuer";
diff --git a/UI/MailPartViewers/Dutch.lproj/Localizable.strings b/UI/MailPartViewers/Dutch.lproj/Localizable.strings
index 4c6c28818..f0b634d77 100644
--- a/UI/MailPartViewers/Dutch.lproj/Localizable.strings
+++ b/UI/MailPartViewers/Dutch.lproj/Localizable.strings
@@ -32,3 +32,8 @@ reply_info = "Dit is een antwoord op een door u verstuurde uitnodiging.";
 "Untitled" = "Geen titel";
 
 "Size" = "Grootte";
+
+"Digital signature is not valid" = "Digital signature is not valid";
+"Message is signed" = "Message is signed";
+"Subject" = "Subject";
+"Issuer" = "Issuer";
diff --git a/UI/MailPartViewers/English.lproj/Localizable.strings b/UI/MailPartViewers/English.lproj/Localizable.strings
index c87e44c60..9c7527c1c 100644
--- a/UI/MailPartViewers/English.lproj/Localizable.strings
+++ b/UI/MailPartViewers/English.lproj/Localizable.strings
@@ -32,3 +32,8 @@ reply_info = "This is a reply to an event invitation done by you.";
 "Untitled" = "Untitled";
 
 "Size" = "Size";
+
+"Digital signature is not valid" = "Digital signature is not valid";
+"Message is signed" = "Message is signed";
+"Subject" = "Subject";
+"Issuer" = "Issuer";
diff --git a/UI/MailPartViewers/French.lproj/Localizable.strings b/UI/MailPartViewers/French.lproj/Localizable.strings
index 8574aca11..0751304e1 100644
--- a/UI/MailPartViewers/French.lproj/Localizable.strings
+++ b/UI/MailPartViewers/French.lproj/Localizable.strings
@@ -32,3 +32,8 @@ reply_info = "Ceci est une réponse à un événement que vous avez organisé.";
 "Untitled" = "Sans titre";
 
 "Size" = "Taille";
+
+"Digital signature is not valid" = "Signature digitale non-valide";
+"Message is signed" = "Message signé";
+"Subject" = "Sujet";
+"Issuer" = "Émetteur";
diff --git a/UI/MailPartViewers/German.lproj/Localizable.strings b/UI/MailPartViewers/German.lproj/Localizable.strings
index 537ec108b..f2f573442 100644
--- a/UI/MailPartViewers/German.lproj/Localizable.strings
+++ b/UI/MailPartViewers/German.lproj/Localizable.strings
@@ -31,4 +31,9 @@ reply_info = "Dies ist eine Anwort auf eine Einladung von Ihnen";
 
 "Untitled" = "ohne Titel";
 
+"Digital signature is not valid" = "Digital signature is not valid";
+"Message is signed" = "Message is signed";
+"Subject" = "Subject";
+"Issuer" = "Issuer";
+
 "Size" = "Größe";
diff --git a/UI/MailPartViewers/Hungarian.lproj/Localizable.strings b/UI/MailPartViewers/Hungarian.lproj/Localizable.strings
index e335e73ee..fe99fac03 100644
--- a/UI/MailPartViewers/Hungarian.lproj/Localizable.strings
+++ b/UI/MailPartViewers/Hungarian.lproj/Localizable.strings
@@ -31,4 +31,9 @@ reply_info = "Ez egy válasz az ön által kiküldött meghívásra.";
 
 "Untitled" = "Névtelen";
 
+"Digital signature is not valid" = "Digital signature is not valid";
+"Message is signed" = "Message is signed";
+"Subject" = "Subject";
+"Issuer" = "Issuer";
+
 "Size" = "Méret";
diff --git a/UI/MailPartViewers/Italian.lproj/Localizable.strings b/UI/MailPartViewers/Italian.lproj/Localizable.strings
index 3665b9c8f..949e70b4f 100644
--- a/UI/MailPartViewers/Italian.lproj/Localizable.strings
+++ b/UI/MailPartViewers/Italian.lproj/Localizable.strings
@@ -32,3 +32,8 @@ reply_info = "Questa è una risposta ad un invito ad un evento organizzato da te
 "Untitled" = "Senza titolo";
 
 "Size" = "Dimensione";
+
+"Digital signature is not valid" = "Digital signature is not valid";
+"Message is signed" = "Message is signed";
+"Subject" = "Subject";
+"Issuer" = "Issuer";
diff --git a/UI/MailPartViewers/README.txt b/UI/MailPartViewers/README.txt
deleted file mode 100644
index 26a97fa98..000000000
--- a/UI/MailPartViewers/README.txt
+++ /dev/null
@@ -1,17 +0,0 @@
-SOGo MailPartViewers
-====================
-
-TODO
-
-This product bundle contains components for displaying certain parts of an
-email, like the text content, attachments or embedded images.
-
-All the contained classes inherit from UIxMailPartViewer which provides the
-majority of the functionality. Subclasses usually only add methods for the
-presentation of the content (which in turn is usually done in the templates).
-
-The "master object" which selects appropriate classes and coordinates the
-rendering is the UIxMailRenderingContext. The context also maintains a cache
-of components for rendering which can then be reused for similiar parts in the
-mail. Note that this only works for leaf-content (eg not for recursive ones
-like multipart/* viewers).
diff --git a/UI/MailPartViewers/Russian.lproj/Localizable.strings b/UI/MailPartViewers/Russian.lproj/Localizable.strings
index 442036acb..951e65061 100644
--- a/UI/MailPartViewers/Russian.lproj/Localizable.strings
+++ b/UI/MailPartViewers/Russian.lproj/Localizable.strings
@@ -31,4 +31,10 @@ reply_info = "Это ответ на Ваше приглашение на мер
 
 "Untitled" = "Без названия";
 
+
+"Digital signature is not valid" = "Digital signature is not valid";
+"Message is signed" = "Message is signed";
+"Subject" = "Subject";
+"Issuer" = "Issuer";
+
 "Size" = "Размер";
diff --git a/UI/MailPartViewers/Spanish.lproj/Localizable.strings b/UI/MailPartViewers/Spanish.lproj/Localizable.strings
index dde409842..d2a224bab 100644
--- a/UI/MailPartViewers/Spanish.lproj/Localizable.strings
+++ b/UI/MailPartViewers/Spanish.lproj/Localizable.strings
@@ -31,4 +31,9 @@ reply_info = "Esta es la respuesta a una invitación de evento hecha por usted."
 
 "Untitled" = "Sin título";
 
+"Digital signature is not valid" = "Digital signature is not valid";
+"Message is signed" = "Message is signed";
+"Subject" = "Subject";
+"Issuer" = "Issuer";
+
 "Size" = "Tamaño";
diff --git a/UI/MailPartViewers/Welsh.lproj/Localizable.strings b/UI/MailPartViewers/Welsh.lproj/Localizable.strings
index 4218ed2b2..e4e2185f7 100644
--- a/UI/MailPartViewers/Welsh.lproj/Localizable.strings
+++ b/UI/MailPartViewers/Welsh.lproj/Localizable.strings
@@ -32,3 +32,8 @@ reply_info = "Dyma ymateb i wahoddiad i digwyddiad a wnaed gennych chi.";
 "Untitled" = "heb deitl";
 
 "Size" = "maint";
+
+"Digital signature is not valid" = "Digital signature is not valid";
+"Message is signed" = "Message is signed";
+"Subject" = "Subject";
+"Issuer" = "Issuer";