GUACAMOLE-1078: Catalan I18N. Generation of a translation into the Catalan language.

The modifications add translation file for the webapp and the following extensions:
  - guacamole-auth-cas
  - guacamole-auth-duo
  - guacamole-auth-jdbc
  - guacamole-auth-openid
  - guacamole-auth-quickconnect
  - guacamole-auth-radius
  - guacamole-auth-saml
  - guacamole-auth-totp

Modify the guac-manifest file of the different translated extensions and place translations in alphabetical order

extensions/guacamole-auth-cas/src/main/resources/guac-manifest.json

@@ -10,6 +10,7 @@
     ],
 
     "translations" : [
+        "translations/ca.json",
         "translations/de.json",
         "translations/en.json",
         "translations/ja.json",

extensions/guacamole-auth-cas/src/main/resources/translations/ca.json

@@ -0,0 +1,11 @@
+{
+
+    "DATA_SOURCE_CAS" : {
+        "NAME" : "Backend d'inici de sessió unificat (SSO) CAS"
+    },
+
+    "LOGIN" : {
+        "INFO_CAS_REDIRECT_PENDING"  : "Espereu, redireccionant a l'autenticació CAS ..."
+    }
+
+}