At the first time when form presenter is called. The locale get from uiContext is always null.

1. Observed result: localeToFormSections map stores null locale
2. Expected result: localeToFormSections map should store correct locale instead of keeping null variable
3. Additional info:
   The part need to improve maybe here:

   this.activeLocale = ((SubAppContext)uiContext).getAuthoringLocale();
   

   See attached patch for fixing suggestion