Remove space in date text field
Tweak particle settings

* Longer lines
* Slower (frameRate higher)
* More particles
* Smaller particles
* Slower fade out
Interpolate on all points, with maximum of 5
Random particleAge is minimum half of the maxParticleAge
Give the option to provide dummy data
Set interesting startdate
Merge branch 'master' into interpolate

Conflicts:
	viz/index.html
	viz/js/birds.js