Pontoon: Update Catalan (ca) localization of Thunderbird

Co-authored-by: Jordi Serratosa <[email protected]>
Co-authored-by: poc senderi <[email protected]>

ca/mail/messenger/about3Pane.ftl

@@ -503,6 +503,42 @@ apply-current-view-to-folder-message = Voleu aplicar la vista de la carpeta actu
 # Variables:
 #  $name (String): The name of the folder to apply to.
 apply-current-view-to-folder-with-children-message = Voleu aplicar la vista de la carpeta actual a { $name } i a les seves subcarpetes?
+# Variables:
+# $unread (Number) - Number of unread messages in thread.
+# $total (Number) - Number of messages in thread.
+threadpane-sort-header-unread-count =
+    { $unread ->
+        [one]
+            { $total ->
+                [one] <span>1</span> per llegir d'<span>1</span> missatge
+               *[other] <span>1</span> per llegir de <span>{ $total }</span> missatges
+            }
+       *[other]
+            { $total ->
+                [one] <span>{ $unread }</span> per llegir d'<span>1</span> missatge
+               *[other] <span>{ $unread }</span> per llegir de <span>{ $total }</span> missatges
+            }
+    }
+# Variables:
+# $total (Number) - Number of messages in thread.
+threadpane-sort-header-count =
+    { $total ->
+        [one] <span>1</span> missatge
+       *[other] <span>{ $total }</span> missatges
+    }
+threadpane-card-menu-button =
+    .title = Menú del missatge
+message-list-placeholder-no-messages = No s'ha trobat cap missatge
+message-list-placeholder-multiple-folders = S'han seleccionat diverses carpetes
 
 ## Folder pane context menu
 
+# Variables:
+# $count (Number) - Number of selected folders.
+folder-pane-context-mark-folder-read =
+    .label =
+        { $count ->
+            [one] Marca la carpeta com a llegida
+           *[other] Marca les carpetes com a llegides
+        }
+    .accesskey = r