Fix code loading in code block
Don't copy bower packages to ./lib
Add proper markdown block

Doesn't interfere with markdown, but still allows to use the select and
then markup. Also allows HTML tags in the markdown, like it should.

Closes #6.
Don't prettify html by default

It messes up <code></code> sections by appending spaces, which looks
horrible.
Limit width of alerts
Add greeting to logged-in users