API & Client - add API error messages translation

fittrackee_client/src/components/Activity/ActivityAddOrEdit.jsx

@@ -38,7 +38,7 @@ class ActivityAddEdit extends React.Component {
         </Helmet>
         <br />
         <br />
-        {message && <code>{message}</code>}
+        {message && <code>{t(`messages:${message}`)}</code>}
         <div className="container">
           <div className="row">
             <div className="col-md-2" />

fittrackee_client/src/components/Activity/ActivityDisplay/index.jsx

@@ -85,7 +85,7 @@ class ActivityDisplay extends React.Component {
           <title>FitTrackee - {title}</title>
         </Helmet>
         {message ? (
-          <code>{message}</code>
+          <code>{t(`messages:${message}`)}</code>
         ) : (
           <div className="container">
             {displayModal && (