Swift landingpage.
Remove unused images.
Merge remote-tracking branch 'upstream/develop' into swift

Conflicts:
	client/app.coffee
Merge branch 'swift' of github.com:jaapmengers/q42.nl into jaapmengers-swift

Conflicts:
	client/app.coffee
Fix some typos and add an else clause to the blogpost list
Merge branch 'jaapmengers-swift' into develop