Refactored routes from main application
Some cleanup, add 404 page
Irresponsibly large commit: New talk section

- Add all previous talks as separate pages
- Modify the page header to add a basic navigation
- Refactor CSS for easier maintenance in the future
  (using Compass' vertical rhythm module)
- Cleanup/optimization of images
Irresponsibly large commit: New talk section

- Add all previous talks as separate pages
- Modify the page header to add a basic navigation
- Refactor CSS for easier maintenance in the future
  (using Compass' vertical rhythm module)
- Cleanup/optimization of images
Merge branch 'master' of cygnus.uberspace.de:cologne-js

Conflicts:
	routes/index.coffee
Fix iOS orientationchange zoom bug
Adjust headlines/media-queries
Add Apple touch icons

apple-touch-icon-57x57-precomposed.png for non-Retina iPhone and iPod Touch;
apple-touch-icon-72x72-precomposed.png for the first- and second-generation iPad;
apple-touch-icon-114x114-precomposed.png for iPhone 4+ (with Retina Display);
apple-touch-icon-144x144-precomposed.png for iPad 3+ (with Retina Display);

(see http://mathiasbynens.be/notes/touch-icons#no-html)
Optimized logo/beer.js for Retina displays
Add paragraph links to month headlines
Rename images in preparation of IE fix
Fix CSS selector for IE
Add talks for July
More reliable method for determining content path
Replace content JSON with YAML for better readability
Reverted commit f664f8cce5b231fac49613debcb5b6eb0161daf6

Resolving the application's root folder doesn't work this way on Uberspace.
Content updates
Content update 2
Also use 'usergroup' in title
Wording: user group is generally written as two words