diff --git a/framework/messages/ca/yii.php b/framework/messages/ca/yii.php
new file mode 100644
index 0000000000..62d2ffe12d
--- /dev/null
+++ b/framework/messages/ca/yii.php
@@ -0,0 +1,107 @@
+<?php
+/**
+ * Message translations.
+ *
+ * This file is automatically generated by 'yii message' command.
+ * It contains the localizable messages extracted from source code.
+ * You may modify this file by translating the extracted messages.
+ *
+ * Each array element represents the translation (value) of a message (key).
+ * If the value is empty, the message is considered as not translated.
+ * Messages that no longer need translation will have their translations
+ * enclosed between a pair of '@@' marks.
+ *
+ * Message string can be used with plural forms format. Check i18n section
+ * of the guide for details.
+ *
+ * NOTE: this file must be saved in UTF-8 encoding.
+ */
+return array (
+  'An internal server error occurred.' => 'S\'ha produït un error intern al servidor.',
+  'Are you sure to delete this item?' => '¿Estás segur d\'eliminar aquest element?',
+  'Are you sure you want to delete this item?' => 'Estas segur que vols eliminar aquest element?',
+  '{attribute} cannot be blank.' => '{attribute} no pot estar buit.',
+  '{attribute} is invalid.' => '{attribute} és invalid.',
+  '{attribute} is not a valid email address.' => '{attribute} no es una direcció de correu valida.',
+  '{attribute} is not a valid URL.' => '{attribute} no és una URL valida.',
+  '{attribute} must be an integer.' => '{attribute} ha de ser un nombre enter.',
+  '{attribute} must be a number.' => '{attribute} ha de  ser un nombre.',
+  '{attribute} must be a string.' => '{attribute} ha de ser una cadena de caràcters.',
+  '{attribute} must be either "{true}" or "{false}".' => '{attribute} ha de ser "{true}" o "{false}".',
+  '{attribute} must be greater than "{compareValue}".' => '{attribute} ha de ser major que "{compareValue}',
+  '{attribute} must be greater than or equal to "{compareValue}".' => '{attribute} ha de ser major o igual que "{compareValue}".',
+  '{attribute} must be less than "{compareValue}".' => '{attribute} ha de ser menor que "{compareValue}".',
+  '{attribute} must be less than or equal to "{compareValue}".' => '{attribute} ha de ser menor o igual que "{compareValue}".',
+  '{attribute} must be no greater than {max}.' => '{attribute} no pot ser major que {max}.',
+  '{attribute} must be no less than {min}.' => '{attribute} no pot ser menor que {min}.',
+  '{attribute} must be repeated exactly.' => '{attribute} ha de ser repetit exactament igual.',
+  '{attribute} must be "{requiredValue}".' => '{attribute} ha de ser "{requiredValue}".',
+  '{attribute} must not be equal to "{compareValue}".' => '{attribute} no pot ser igual que "{compareValue}".',
+  '{attribute} should contain at least {min, number} {min, plural, one{character} other{characters}}.' => '{attribute} hauria de contenir com a mínim {min, number} {min, plural, one{lletra} other{lletres}}.',
+  '{attribute} should contain at most {max, number} {max, plural, one{character} other{characters}}.' => '{attribute} hauria de contenir com a màxim {max, number} {max, plural, one{lletra} other{lletres}}.',
+  '{attribute} should contain {length, number} {length, plural, one{character} other{characters}}.' => '{attribute} hauria contenir {length, number} {length, plural, one{lletra} other{lletres}}.',
+  '{attribute} "{value}" has already been taken.' => '{attribute} "{value}" ja ha sigut utilitzat.',
+  'Delete' => 'Eliminar',
+  '{delta, plural, =1{a day} other{# days}} ago' => 'hace {delta, plural, =1{un dia} other{# dies}}',
+  '{delta, plural, =1{a minute} other{# minutes}} ago' => 'fa {delta, plural, =1{un minut} other{# minuts}}',
+  '{delta, plural, =1{a month} other{# months}} ago' => 'fa {delta, plural, =1{un mes} other{# mesos}}',
+  '{delta, plural, =1{an hour} other{# hours}} ago' => 'fa {delta, plural, =1{una hora} other{# hores}}',
+  '{delta, plural, =1{a second} other{# seconds}} ago' => 'fa {delta, plural, =1{un segon} other{# segons}}',
+  '{delta, plural, =1{a year} other{# years}} ago' => 'fa {delta, plural, =1{un any} other{# anys}}',
+  'Error' => 'Error',
+  'File upload failed.' => 'Ha fallat la pujada del fitxer.',
+  'Home' => 'Inici',
+  'in {delta, plural, =1{a day} other{# days}}' => 'en {delta, plural, =1{un dia} other{# dies}}',
+  'in {delta, plural, =1{a minute} other{# minutes}}' => 'en {delta, plural, =1{un minut} other{# minuts}}',
+  'in {delta, plural, =1{a month} other{# months}}' => 'en {delta, plural, =1{un mes} other{# mesos}}',
+  'in {delta, plural, =1{an hour} other{# hours}}' => 'en {delta, plural, =1{una hora} other{# hores}}',
+  'in {delta, plural, =1{a second} other{# seconds}}' => 'en {delta, plural, =1{un segon} other{# segons}}',
+  'in {delta, plural, =1{a year} other{# years}}' => 'en {delta, plural, =1{un any} other{# anys}}',
+  'Invalid data received for parameter "{param}".' => 'S\'han rebut dades errònies pel paràmetre "{param}"',
+  'Login Required' => 'Login Requerit',
+  'Missing required arguments: {params}' => 'Falten arguments requerits: {params}',
+  'Missing required parameters: {params}' => 'Falten paràmetres requerits: {params}',
+  '{n} B' => '{n} B',
+  '{n} GB' => '{n} GB',
+  '{n} KB' => '{n} KB',
+  '{n} MB' => '{n} MB',
+  'No help for unknown command "{command}".' => 'No hi ha ajuda per l\'ordre desconeguda "{command}"',
+  'No help for unknown sub-command "{command}".' => 'No hi ha ajuda per la sub-ordre desconeguda "{command}"',
+  'No' => 'No',
+  'No results found.' => 'No s\'han trobat resultats.',
+  '(not set)' => '(no establert)',
+  '{n} PB' => '{n} PB',
+  '{n, plural, =1{# byte} other{# bytes}}' => '{n, plural, =1{# byte} other{# bytes}}',
+  '{n, plural, =1{# gigabyte} other{# gigabytes}}' => '{n, plural, =1{# gigabyte} other{# gigabytes}}',
+  '{n, plural, =1{# kilobyte} other{# kilobytes}}' => '{n, plural, =1{# kilobyte} other{# kilobytes}}',
+  '{n, plural, =1{# megabyte} other{# megabytes}}' => '{n, plural, =1{# megabyte} other{# megabytes}}',
+  '{n, plural, =1{# petabyte} other{# petabytes}}' => '{n, plural, =1{# petabyte} other{# petabytes}}',
+  '{n, plural, =1{# terabyte} other{# terabytes}}' => '{n, plural, =1{# terabyte} other{# terabytes}}',
+  '{n} TB' => '{n} TB',
+  'Only files with these extensions are allowed: {extensions}.' => 'Només s\'accepten arxius amb les seguents extensions: {extensions}',
+  'Only files with these mimeTypes are allowed: {mimeTypes}.' => 'Només s\'accepten arxius amb els seguents tipus MIME: {mimeTypes}',
+  'Only files with these MIME types are allowed: {mimeTypes}.' => 'Només s\'accepten arxius amb els següents tipus MIME: {mimeTypes}.',
+  'Page not found.' => 'No s\'ha trobat la pàgina.',
+  'Please fix the following errors:' => 'Si us plau corregeix els següents errors:',
+  'Please upload a file.' => 'Si us plau puja un arxiu.',
+  'Showing <b>{begin, number}-{end, number}</b> of <b>{totalCount, number}</b> {totalCount, plural, one{item} other{items}}.' => 'Mostrant  <b>{begin, number}-{end, number}</b> de <b>{totalCount, number}</b> {totalCount, plural, one{element} other{elements}}.',
+  'The file "{file}" is not an image.' => 'L\'arxiu "{file}" no és una imatge.',
+  'The file "{file}" is too big. Its size cannot exceed {limit, number} {limit, plural, one{byte} other{bytes}}.' => 'L\'arxiu "{file}" és massa gran. El seu tamany no pot excedir {limit, number} {limit, plural, one{byte} other{bytes}}.',
+  'The file "{file}" is too small. Its size cannot be smaller than {limit, number} {limit, plural, one{byte} other{bytes}}.' => 'L\'arxiu "{file}" és massa petit. El seu tamany no pot ser menor que {limit, number} {limit, plural, one{byte} other{bytes}}.',
+  'The format of {attribute} is invalid.' => 'El format de {attribute} és invalid.',
+  'The image "{file}" is too large. The height cannot be larger than {limit, number} {limit, plural, one{pixel} other{pixels}}.' => 'La imatge "{file}" és massa gran. L\'altura no pot ser major que {limit, number} {limit, plural, one{píxel} other{píxels}}.',
+  'The image "{file}" is too large. The width cannot be larger than {limit, number} {limit, plural, one{pixel} other{pixels}}.' => 'La imatge "{file}" és massa gran. L\'amplada no pot ser major que  {limit, number} {limit, plural, one{píxel} other{píxels}}.',
+  'The image "{file}" is too small. The height cannot be smaller than {limit, number} {limit, plural, one{pixel} other{pixels}}.' => 'La imatge  "{file}" és massa petita. L\'altura no pot ser menor que {limit, number} {limit, plural, one{píxel} other{píxels}}.',
+  'The image "{file}" is too small. The width cannot be smaller than {limit, number} {limit, plural, one{pixel} other{pixels}}.' => 'La imatge "{file}" és massa petita. L\'amplada no pot ser menor que {limit, number} {limit, plural, one{píxel} other{píxels}}.',
+  'the input value' => 'el valor d\'entrada',
+  'The verification code is incorrect.' => 'El codi de verificació és incorrecte.',
+  'Total <b>{count, number}</b> {count, plural, one{item} other{items}}.' => 'Total <b>{count, number}</b> {count, plural, one{element} other{elements}}.',
+  'Unable to verify your data submission.' => 'No s\'ha pogut verificar les dades enviades.',
+  'Unknown command "{command}".' => 'Ordre desconeguda "{command}".',
+  'Unknown option: --{name}' => 'Opció desconeguda: --{name}',
+  'Update' => 'Actualitzar',
+  'View' => 'Veure',
+  'Yes' => 'Sí',
+  'You are not allowed to perform this action.' => 'No tems permís per executar aquesta acció.',
+  'You can upload at most {limit, number} {limit, plural, one{file} other{files}}.' => 'Pots pujar com a màxim {limit, number} {limit, plural, one{arxiu} other{arxius}}.',
+);
diff --git a/framework/messages/config.php b/framework/messages/config.php
index 7bad25975b..c9f32793bd 100644
--- a/framework/messages/config.php
+++ b/framework/messages/config.php
@@ -7,7 +7,7 @@ return [
     'messagePath' => __DIR__,
     // array, required, list of language codes that the extracted messages
     // should be translated to. For example, ['zh-CN', 'de'].
-    'languages' => ['ar', 'bg', 'da', 'de', 'el', 'es', 'fa-IR', 'fi', 'fr', 'hu', 'it', 'ja', 'kk', 'lt', 'lv', 'nl', 'pl', 'pt-BR', 'pt-PT', 'ro', 'ru', 'sk', 'sr', 'sr-Latn', 'uk', 'vi', 'zh-CN'],
+    'languages' => ['ar', 'bg', 'ca', 'da', 'de', 'el', 'es', 'fa-IR', 'fi', 'fr', 'hu', 'it', 'ja', 'kk', 'lt', 'lv', 'nl', 'pl', 'pt-BR', 'pt-PT', 'ro', 'ru', 'sk', 'sr', 'sr-Latn', 'uk', 'vi', 'zh-CN'],
     // string, the name of the function for translating messages.
     // Defaults to 'Yii::t'. This is used as a mark to find the messages to be
     // translated. You may use a string for single function name or an array for