Add index page with a brief description and overview of the database.
Add footer.
Bugfix: Template rendering for Show Article page sometimes crashes.
Add list of recently added artcles to index page.
Merge branch 'master' into flask-admin

Conflicts:
	assets/css/app.scss
	dexter/templates/articles/show.haml
	dexter/templates/layout.haml
Remove lorem ipsum.
Merge pull request #8 from Code4SA/flask-admin

Improve index page