[#9] some structure changes

Moving middlewares in app/ and simplifying server bootstrap.
[#9] cleaning templates and adding index controller
[#9] adding ga include
[#9] making logging non dependent on app, config to get logger inst
[#9] adding robots.txt and humans.txt

Note that these two files will be served via nginx in production.
Merge pull request #12 from hackcyprus/9-layout

[#9] layout