Use fully qualified class for dependent scope cache and fix handling of deferred types in MetaClassCache.
Only set default page in URLPatternMatcher if pages exist
Performance improvement when scanning for i18n bundles

- Only scan once to find all .json resources for all bundles
Use Predicate to filter file paths when scanning in GwtValidationGenerator.
Only scan urls with ErraiApp.properties or json files from Bundle annotations in TranslationServiceGenerator.