translations: fix wrong translations

Qt was nos taking into account english if another translated language was in
the system preferences list. We now check if english is defined as Primary
language.

Change-Id: Ia952778293a3942ea3aae9eae7c9da208d5e149e
Tuleap: #59

src/main.mm

@@ -49,9 +49,16 @@ int main(int argc, const char *argv[]) {
     app->setAttribute(Qt::AA_MacPluginApplication);
 
     dir.cdUp();
-    QTranslator translator;
-    if (translator.load(QLocale::system(), "lrc", "_", dir.absolutePath()+"/Resources/QtTranslations")) {
-        app->installTranslator(&translator);
+
+    //We need to check if primary language is an English variant (en, en-CA etc...) before installing a translator
+    NSString* lang = [[NSLocale preferredLanguages] objectAtIndex:0];
+    if (![lang containsString:@"en"]) {
+        QTranslator translator;
+        if (translator.load(QLocale::system(), "lrc", "_", dir.absolutePath()+"/Resources/QtTranslations")) {
+            app->installTranslator(&translator);
+        } else {
+            NSLog(@"Couldn't load qt translator");
+        }
     }
 
     CategorizedHistoryModel::instance()->addCollection<LocalHistoryCollection>(LoadOptions::FORCE_ENABLED);