add arabic to RTL, add arabic and hungarian to prefs

ankiqt/ui/main.py

@@ -1972,7 +1972,8 @@ it to your friends.
             self.mainWin.retranslateUi(self)
         anki.lang.setLang(self.config["interfaceLang"], local=False)
         self.updateTitleBar()
-        if self.config['interfaceLang'] in ("he",) and not self.config['forceLTR']:
+        if self.config['interfaceLang'] in ("he","ar") and \
+               not self.config['forceLTR']:
             self.app.setLayoutDirection(Qt.RightToLeft)
         else:
             self.app.setLayoutDirection(Qt.LeftToRight)

ankiqt/ui/preferences.py

@@ -33,6 +33,7 @@ class Preferences(QDialog):
             (u"Esperanto", "eo"),
             (u"Français", "fr"),
             (u"Italiano", "it"),
+            (u"Magyar Nyelv", "hu"),
             (u"Nederlands","nl"),
             (u"Norsk","nb"),
             (u"Polski", "pl"),
@@ -41,6 +42,7 @@ class Preferences(QDialog):
             (u"Suomi", "fi"),
             (u"Svenska", "sv"),
             (u"Čeština", "cs"),
+            (u"العربية", "ar"),
             (u"עִבְרִית", "he"),
             (u"Монгол хэл","mn"),
             (u"日本語", "ja"),