Add functionality for loading html as an article
Clean up TropesArticle
Add OfflineArticle which uses preloaded ressources
Move functionality from OfflineArticle into TropesArticle
Moved duplicate functionality into SavedArticlesHelper
Uses the database to find the matching article
Add support for subclasses of TropesArticle
Clean up ArticlesSource and add new helper functions
Clean up SavedArticlesHelper & add new helper functions
Use getAllArticleItems instead of getAllArticles

getAllArticles may return more data than is necessary for these
activities
Implement the backend for offline functionality
Move (Offline)ArticleItem to the database package
Target API level 15
Add internet permission to ArticleActivity
Merge branch 'master' into offline
Switch to maven
Switch to maven. Change of project structure.
Refactor the "Home" buttons
Fix bug that crashed SearchActivity when saving an item