added missing icons

JPSvis now uses the same geometry library as JPScore.

This version is extremely fast when visualising thousand of agents. It also uses less memory and can load more agents. The previous version was limitted to 5-10 tousand depending on the framerate. However the agents are displayed as sphere with constant radius. So I recomment to stick with the previous revision untill this is fixed/enhanced.

version has to be "0.4" as in 
<geometry version ="0.4" caption="second life" gridSizeX="20" gridSizeY="20" unit="m">
and extension .xml