Pontoon: Update Danish (da) localization of Pontoon Intro
Pontoon: Update Danish (da) localization of Pontoon Intro

Localization authors:
- joergenr <joergenr@stofanet.dk>
- ludvigs <ludvigs@kimludvigsen.dk>

jotes/pontoon-intro,jotes/pontoon-intro,mathjazz/pontoon-intro,mathjazz/pontoon-intro,mathjazz/pontoon-intro,jotes/pontoon-intro