Travis build on 2.0 and 2.1
Synchronised Norwegian translation with the English en.yml.

Thereby avoiding the admin pages crashing after selecting the Norwegian translation.
Use a relative image path

This required for blogs that are not hosted at the root url of
their domain.
Revised all of Norwegian translation.
Typos and capitals in README [ci skip]
Refactor duplication in notes controller

Clean spec
Just clean syntax on specs
Limit set of allowed comment parameters
Run db setup inside bundle on Travis CI
Excerpt is not editable anymore. Drop it even for full_article_content partial. Close #423
Upgrade to Rails 3.2.17
Upgrade to Rails 3.2.18
Remove useless gems

- require_relative is for use in Ruby 1.8
- iconv is not used
Fix indenting
Remove useless #map
Make Travis CI validate the rendered feeds
Avoid symbolizing by stringifying instead