reflection-blog update, speedup

reflection-blog underwent some refactorization as well as a speed improvement and the inclusion of the hyphenator java script libaray.

Refactorization The blog application is now properly named blog from previously being called myapp. All contrib packages now live in contrib and an appropriate file CONTRIB.md has been created that lists all relevant contrib packages.

Speed improvement robots.txt was served dynamically, which ate away precious app engine resources. This is now fixed and robots.txt is served as a static file as expected. The favicon has got it’s own static handler too, though there is no default favicon yet!