Added support for LANGUAGE tags to Cinder's loadResource() method.

Adding localized resources on Windows is relatively easy: just add LANGUAGE LANG_GERMAN, SUBLANG_NEUTRAL to the Resources.rc file, and all resources following it will be listed as "German". Cinder did not support this out-of-the-box, so I've made a little change. This should have no effect on existing samples and applications.

Note: to support LANGUAGE tags, users must add '#include <Windows.h>' to their Resources.h file. Unfortunately, adding this line to 'cinder/CinderResources.h' does not seem to work, perhaps because the resource compiler doesn't properly handle includes-within-includes.