New style.
Several updates to design and content
Add modal for tickets.
Added logo draft, map, sponsor.
Added party infos, adapt styling a bit.
Introduce new header backround, clean CSS order,

add denkwerk as sposnor.
Claim copyright in LICENSE with Sebastian.
Add twitter to footer
PhpStorm Project folder to ignore list
Header refinement

Terminal font, buy button
Content refinement

Terminal font for headlines, speaker Ian
Optimize images
Re-indent using tabs
Small changes to codebase, RWD
Add contact mail button
Add cooler typo settings to desktop browsers.
Switch to Leaflet Maps API.
Add same dimensions to logo so it’s a square

Targets issue #3
Improve button color (contrast).

Targets #3.
Increase button contrast, make slogan bigger.

Targets #3.