Move i18n_init after the addin connecction
* src/common.h (i18n_init): Expose. * src/main.c (DllMain): Don't init here. (i18n_init): No longer static. * src/gpgoladdin.cpp (GpgolAddin::OnStartupComplete): Call it.
This ensures that the Application object is accessible when
initializing i18n.